1 00:00:04,240 --> 00:00:06,320 [narrator] This is The Americas, 2 00:00:06,960 --> 00:00:11,280 an extraordinary journey across Earth's great supercontinent. 3 00:00:12,360 --> 00:00:15,519 The widest variety of life on the planet. 4 00:00:15,520 --> 00:00:16,800 [snaps] 5 00:00:17,840 --> 00:00:19,639 The untold story... 6 00:00:19,640 --> 00:00:20,919 [burbling] 7 00:00:20,920 --> 00:00:22,919 ...of our home. 8 00:00:22,920 --> 00:00:25,400 {\an8}[epic orchestral music] 9 00:00:26,440 --> 00:00:28,120 {\an8}Tonight on The Americas... 10 00:00:34,040 --> 00:00:35,280 The Andes. 11 00:00:38,960 --> 00:00:41,480 A spectacular sky world 12 00:00:42,200 --> 00:00:44,199 and the longest mountain range 13 00:00:44,200 --> 00:00:45,600 in the Americas. 14 00:00:48,320 --> 00:00:49,399 [rumbling] 15 00:00:49,400 --> 00:00:51,000 Forged by fire 16 00:00:52,040 --> 00:00:53,759 and ice. 17 00:00:53,760 --> 00:00:55,119 [rushing] 18 00:00:55,120 --> 00:00:57,480 It's a world of unrivaled beauty. 19 00:00:58,960 --> 00:01:00,439 But here, 20 00:01:00,440 --> 00:01:03,120 life must battle to survive 21 00:01:03,800 --> 00:01:07,279 in the most perilous places imaginable. 22 00:01:07,280 --> 00:01:08,480 [thunder rumbling] 23 00:01:09,640 --> 00:01:11,760 The planet's driest deserts. 24 00:01:13,040 --> 00:01:14,440 Frozen peaks. 25 00:01:15,360 --> 00:01:18,599 And strange, magical forests in the clouds. 26 00:01:18,600 --> 00:01:20,359 [wings whirring] 27 00:01:20,360 --> 00:01:21,880 Every animal 28 00:01:22,440 --> 00:01:23,720 must triumph 29 00:01:24,480 --> 00:01:28,920 in life lived truly on the edge. 30 00:01:33,680 --> 00:01:37,080 The Andes is the spine of South America. 31 00:01:37,920 --> 00:01:40,719 Running from the southern tip of this supercontinent, 32 00:01:40,720 --> 00:01:44,160 it stretches 5,500 miles 33 00:01:45,000 --> 00:01:48,120 forming the high peaks of Bolivia and Peru 34 00:01:48,600 --> 00:01:51,119 before pushing north toward the equator 35 00:01:51,120 --> 00:01:53,320 into the heart of the tropics, 36 00:01:55,720 --> 00:01:57,520 where the mountains of Ecuador 37 00:01:58,160 --> 00:02:01,559 can seem like looking back in time. 38 00:02:01,560 --> 00:02:03,640 [water rumbling] 39 00:02:04,480 --> 00:02:07,439 Sheer cliffs and deep gorges 40 00:02:07,440 --> 00:02:09,719 are cloaked in forests. 41 00:02:09,720 --> 00:02:12,000 [animals chittering] 42 00:02:14,040 --> 00:02:16,879 Here, giant higuerĂ³n trees, 43 00:02:16,880 --> 00:02:19,719 draped in bromeliads, are fruiting. 44 00:02:19,720 --> 00:02:23,359 [birds chirping] 45 00:02:23,360 --> 00:02:26,599 And that's exactly what one family 46 00:02:26,600 --> 00:02:28,159 has been waiting for. 47 00:02:28,160 --> 00:02:30,999 [bright orchestral music] 48 00:02:31,000 --> 00:02:34,559 Hiding over a thousand feet above the forest, 49 00:02:34,560 --> 00:02:36,879 a spectacled bear mom. 50 00:02:36,880 --> 00:02:39,360 [cubs bleating] 51 00:02:41,600 --> 00:02:44,600 These bears are the rarest in the Americas 52 00:02:45,440 --> 00:02:47,360 and the inspiration for Paddington. 53 00:02:49,600 --> 00:02:52,800 Mom, known by scientists as "Silvestre," 54 00:02:53,480 --> 00:02:56,320 is nursing her three-month-old twins, 55 00:02:57,000 --> 00:02:58,880 "Yoyo" and "Irene," 56 00:02:59,680 --> 00:03:01,880 secluded in their tiny nest. 57 00:03:05,440 --> 00:03:09,319 The towering cliffs have kept them safe from predators. 58 00:03:09,320 --> 00:03:10,840 [cub bleats] 59 00:03:12,320 --> 00:03:15,200 But now the family must leave. 60 00:03:15,840 --> 00:03:18,040 Mom's milk is running out. 61 00:03:19,280 --> 00:03:20,760 They need the fruit 62 00:03:21,680 --> 00:03:23,880 nearly half a mile below. 63 00:03:28,440 --> 00:03:31,239 The sky-high rock face that protected them 64 00:03:31,240 --> 00:03:35,480 is about to become their biggest challenge. 65 00:03:36,320 --> 00:03:39,360 The most dangerous journey of their lives 66 00:03:40,040 --> 00:03:41,079 begins. 67 00:03:41,080 --> 00:03:44,080 [cubs bleating] 68 00:03:52,760 --> 00:03:55,640 [bleating continues] 69 00:03:56,720 --> 00:03:58,719 Tracked using her collar, 70 00:03:58,720 --> 00:04:03,160 scientists know Silvestre has made this descent before. 71 00:04:04,800 --> 00:04:06,880 [tense music] 72 00:04:11,480 --> 00:04:14,800 [loose rocks clattering] 73 00:04:15,880 --> 00:04:19,200 But it's the first time for the cubs. 74 00:04:23,120 --> 00:04:24,120 [cubs bleating] 75 00:04:26,520 --> 00:04:30,640 Yoyo and Irene will need to follow their mother closely. 76 00:04:33,320 --> 00:04:34,599 One misplaced step... 77 00:04:34,600 --> 00:04:35,679 [rocks clattering] 78 00:04:35,680 --> 00:04:37,080 ...could be a disaster. 79 00:04:41,120 --> 00:04:43,240 Cubs have fallen to their death here. 80 00:04:45,800 --> 00:04:47,360 [cubs bleating] 81 00:04:56,240 --> 00:04:58,359 [rocks clattering] 82 00:04:58,360 --> 00:05:00,960 [cubs bleating] 83 00:05:04,640 --> 00:05:07,120 A moment of reassurance from Mom. 84 00:05:08,880 --> 00:05:11,960 She knows the hardest part is yet to come. 85 00:05:15,640 --> 00:05:18,920 - [cubs bleating] - [rocks clattering] 86 00:05:20,400 --> 00:05:22,119 Irene takes a wrong turn. 87 00:05:22,120 --> 00:05:23,720 [rocks clattering] 88 00:05:24,800 --> 00:05:26,320 She has lost sight of Mom. 89 00:05:27,720 --> 00:05:30,400 - [bleating] - And at the worst possible moment. 90 00:05:30,800 --> 00:05:32,440 [bleating continues] 91 00:05:33,200 --> 00:05:34,560 [rocks clattering] 92 00:05:38,920 --> 00:05:39,920 [bleats] 93 00:05:46,200 --> 00:05:48,200 [suspenseful music] 94 00:05:50,680 --> 00:05:53,279 [rocks clattering] 95 00:05:53,280 --> 00:05:55,640 [clattering continues] 96 00:06:04,680 --> 00:06:06,799 Yoyo has made it down okay. 97 00:06:06,800 --> 00:06:08,680 [bleating] 98 00:06:13,920 --> 00:06:14,999 [bleats] 99 00:06:15,000 --> 00:06:17,880 And so has Irene. 100 00:06:21,000 --> 00:06:23,400 The worst seems behind them. 101 00:06:24,160 --> 00:06:26,239 But there's no time to rest. 102 00:06:26,240 --> 00:06:30,399 [gentle music] 103 00:06:30,400 --> 00:06:34,480 [insects chirping] 104 00:06:35,960 --> 00:06:39,239 Silvestre is bringing them to the very same fruit tree 105 00:06:39,240 --> 00:06:41,199 that she returns to every year. 106 00:06:41,200 --> 00:06:44,360 [cubs bleating] 107 00:06:52,080 --> 00:06:55,000 [bleating] 108 00:06:55,800 --> 00:06:59,000 [gentle music continues] 109 00:06:59,840 --> 00:07:01,639 Plants and fruit like this 110 00:07:01,640 --> 00:07:04,920 can make up over 90% of a spectacled bear's diet, 111 00:07:05,760 --> 00:07:08,680 and the cubs are not holding back. 112 00:07:11,760 --> 00:07:16,480 [gentle music rises] 113 00:07:22,360 --> 00:07:23,360 [bleats] 114 00:07:24,200 --> 00:07:26,479 Spectacled bears navigate these mountains 115 00:07:26,480 --> 00:07:30,400 by having a detailed mental map of their world. 116 00:07:31,920 --> 00:07:34,719 The cubs can stay with Mom for over two years 117 00:07:34,720 --> 00:07:36,440 to build a map of their own. 118 00:07:37,440 --> 00:07:38,999 One day, with luck, 119 00:07:39,000 --> 00:07:42,279 Irene will be able to lead her own cubs 120 00:07:42,280 --> 00:07:43,679 down the same cliffs. 121 00:07:43,680 --> 00:07:46,080 [gentle music continues] 122 00:07:50,000 --> 00:07:51,999 It all seems so easy now, 123 00:07:52,000 --> 00:07:56,440 but the cubs have just undertaken a death-defying start to life. 124 00:07:58,120 --> 00:07:59,920 In the mountains of the Andes, 125 00:08:01,320 --> 00:08:04,360 all life is pushed to the limit. 126 00:08:08,000 --> 00:08:10,520 [music crescendos] 127 00:08:12,240 --> 00:08:17,440 These remarkable high-rise forests hide other extraordinary secrets. 128 00:08:18,480 --> 00:08:21,639 Spectacular animals so small and fast, 129 00:08:21,640 --> 00:08:24,639 they're almost impossible to capture on camera. 130 00:08:24,640 --> 00:08:25,720 [whizzing] 131 00:08:28,080 --> 00:08:31,360 Our journey in the tropical Andes continues, 132 00:08:32,480 --> 00:08:35,159 rising to 10,000 feet, 133 00:08:35,160 --> 00:08:38,480 where the peaks trap moist air from the Amazon, 134 00:08:39,320 --> 00:08:43,520 creating a mysterious cloud forest. 135 00:08:44,000 --> 00:08:45,439 [majestic music] 136 00:08:45,440 --> 00:08:48,880 Here, nature is at its most magical. 137 00:08:49,640 --> 00:08:53,560 Curiously-shaped flowers shine out like beacons, 138 00:08:54,240 --> 00:08:58,600 signaling they have energy-rich nectar inside. 139 00:09:01,000 --> 00:09:02,800 [grand music] 140 00:09:04,360 --> 00:09:06,520 If they can entice a visitor, 141 00:09:07,200 --> 00:09:08,960 they will be pollinated. 142 00:09:11,200 --> 00:09:13,519 Usually, bugs do that job, 143 00:09:13,520 --> 00:09:16,760 but these forests are too cold for many of them. 144 00:09:17,400 --> 00:09:19,439 So instead, it's done by... 145 00:09:19,440 --> 00:09:21,119 [harp glissando] 146 00:09:21,120 --> 00:09:22,279 ...hummingbirds. 147 00:09:22,280 --> 00:09:23,359 [wings whirring] 148 00:09:23,360 --> 00:09:26,119 Most not much bigger than your thumb. 149 00:09:26,120 --> 00:09:27,200 [fluttering] 150 00:09:27,880 --> 00:09:31,279 In fact, the Andes is home to more species of hummingbirds 151 00:09:31,280 --> 00:09:33,199 than anywhere else on Earth. 152 00:09:33,200 --> 00:09:34,639 [wings whirring] 153 00:09:34,640 --> 00:09:36,119 [flapping] 154 00:09:36,120 --> 00:09:38,879 Feisty and agile, 155 00:09:38,880 --> 00:09:42,960 they'll fight to be the first in line for a drink of nectar 156 00:09:44,280 --> 00:09:48,400 on shimmering wings that can beat over 80 times a second. 157 00:09:49,120 --> 00:09:51,879 [upbeat music] 158 00:09:51,880 --> 00:09:53,040 [wings whirring] 159 00:09:56,800 --> 00:09:58,760 [flapping] 160 00:09:59,680 --> 00:10:03,720 The Andes has thousands of remote valleys like these, 161 00:10:04,400 --> 00:10:06,280 but just one in Peru 162 00:10:06,920 --> 00:10:10,320 is the home to an almost mythical hummingbird, 163 00:10:13,040 --> 00:10:15,480 hardly ever seen in the open. 164 00:10:17,720 --> 00:10:20,839 [gentle flute music] 165 00:10:20,840 --> 00:10:24,720 He is a Marvelous Spatuletail, 166 00:10:26,360 --> 00:10:29,240 one of just 500 or so left on Earth. 167 00:10:31,600 --> 00:10:36,199 Deforestation has meant their habitat is disappearing. 168 00:10:36,200 --> 00:10:38,119 [light music] 169 00:10:38,120 --> 00:10:41,600 Only males have these extravagant tail feathers, 170 00:10:42,120 --> 00:10:44,080 which have just one purpose... 171 00:10:46,240 --> 00:10:48,080 to attract a female. 172 00:10:48,880 --> 00:10:51,840 [gentle music] 173 00:10:56,600 --> 00:10:59,160 He's keeping them in top condition, 174 00:11:02,360 --> 00:11:05,560 for the performance of his life. 175 00:11:07,120 --> 00:11:08,279 [low murmur] 176 00:11:08,280 --> 00:11:10,200 An audience has arrived, 177 00:11:12,720 --> 00:11:14,999 but this is not who he wants. 178 00:11:15,000 --> 00:11:16,880 [dramatic music] 179 00:11:21,920 --> 00:11:23,080 Rivals. 180 00:11:24,320 --> 00:11:27,719 Every male around, even stumpy-tailed youngsters, 181 00:11:27,720 --> 00:11:31,879 have turned up to fight to control this exclusive courtship area. 182 00:11:31,880 --> 00:11:34,440 [dramatic music continues] 183 00:11:38,000 --> 00:11:41,480 He's not the only one who wants the limelight. 184 00:11:42,200 --> 00:11:45,480 [dramatic music continues] 185 00:11:50,600 --> 00:11:53,000 [gentle flute music] 186 00:11:54,400 --> 00:11:56,600 Fighting off so many is exhausting. 187 00:12:00,640 --> 00:12:03,240 He really should refuel. 188 00:12:06,200 --> 00:12:07,960 But that's going to have to wait. 189 00:12:10,480 --> 00:12:13,559 A female Marvelous Spatuletail is here. 190 00:12:13,560 --> 00:12:17,560 [enchanting music] 191 00:12:19,760 --> 00:12:22,599 Now the show can begin. 192 00:12:22,600 --> 00:12:25,840 [chiming music] 193 00:12:26,600 --> 00:12:29,880 He'll be judged on the length of his tail feathers 194 00:12:31,040 --> 00:12:33,720 and the quality of his performance. 195 00:12:36,560 --> 00:12:39,719 [stately music] 196 00:12:39,720 --> 00:12:41,240 [chirping] 197 00:12:44,720 --> 00:12:47,320 [stately music continues] 198 00:12:49,880 --> 00:12:51,679 She's interested. 199 00:12:51,680 --> 00:12:54,680 [wings fluttering] 200 00:12:57,760 --> 00:13:00,800 Time to take his display to the next level. 201 00:13:03,040 --> 00:13:06,160 And now, it's all about stamina. 202 00:13:07,600 --> 00:13:10,200 [enchanting music] 203 00:13:12,800 --> 00:13:16,760 In this thin mountain air, he's got to dig deep. 204 00:13:24,440 --> 00:13:27,360 [enchanting music continues] 205 00:13:29,680 --> 00:13:32,400 It's a critical moment, both for him, 206 00:13:32,840 --> 00:13:35,480 and the future of the species. 207 00:13:36,440 --> 00:13:38,319 If he wins her over, 208 00:13:38,320 --> 00:13:42,560 together, they will produce the next generation. 209 00:13:46,240 --> 00:13:48,640 [enchanting music rises] 210 00:13:49,440 --> 00:13:50,760 And at last, 211 00:13:51,360 --> 00:13:53,959 she accepts his invitation. 212 00:13:53,960 --> 00:13:55,200 [wings whirring] 213 00:13:57,760 --> 00:14:00,800 A sign of hope for this remarkable hummingbird. 214 00:14:03,560 --> 00:14:05,839 [birds chirping] 215 00:14:05,840 --> 00:14:07,759 Throughout the Andes... 216 00:14:07,760 --> 00:14:09,399 [loud blast] 217 00:14:09,400 --> 00:14:12,720 ...the land itself can feel alive. 218 00:14:14,240 --> 00:14:15,999 [hissing] 219 00:14:16,000 --> 00:14:18,599 And in a way, it is, 220 00:14:18,600 --> 00:14:21,919 with an eruption occurring every few years. 221 00:14:21,920 --> 00:14:23,559 [loud blast] 222 00:14:23,560 --> 00:14:25,920 [light orchestral music] 223 00:14:26,640 --> 00:14:29,479 Immense earth forces forged these mountains... 224 00:14:29,480 --> 00:14:30,559 [loud blast] 225 00:14:30,560 --> 00:14:33,720 ...leaving a legacy of over 200 active volcanoes... 226 00:14:34,520 --> 00:14:36,679 - [loud blast] - ...more than anywhere else 227 00:14:36,680 --> 00:14:38,479 in the Americas. 228 00:14:38,480 --> 00:14:41,440 [dramatic orchestral music] 229 00:14:42,640 --> 00:14:44,079 For 40 million years, 230 00:14:44,080 --> 00:14:46,919 they've pushed higher and higher. 231 00:14:46,920 --> 00:14:50,120 [dramatic orchestral music] 232 00:14:51,280 --> 00:14:52,839 And in a few places, 233 00:14:52,840 --> 00:14:54,479 an eerie ice world 234 00:14:54,480 --> 00:14:56,599 has formed at the peaks. 235 00:14:56,600 --> 00:14:57,759 [loud blast] 236 00:14:57,760 --> 00:15:01,160 Home to a true marvel of nature. 237 00:15:04,600 --> 00:15:06,919 The Andes is so high 238 00:15:06,920 --> 00:15:11,320 that 99% of the world's tropical glaciers are found here. 239 00:15:13,440 --> 00:15:15,800 The largest is in southern Peru. 240 00:15:19,560 --> 00:15:21,199 It's certainly cold, 241 00:15:21,200 --> 00:15:24,479 but at an altitude of 18,000 feet, 242 00:15:24,480 --> 00:15:28,160 ultraviolet radiation is very intense. 243 00:15:30,960 --> 00:15:33,079 So when the sun shines, 244 00:15:33,080 --> 00:15:38,080 the ground heats to a jaw-dropping 111 degrees Fahrenheit, 245 00:15:38,720 --> 00:15:43,480 transforming ice world to sauna in the blink of an eye. 246 00:15:46,120 --> 00:15:49,000 It's the last place to expect to find 247 00:15:49,800 --> 00:15:50,799 a frog. 248 00:15:50,800 --> 00:15:54,279 [playful music] 249 00:15:54,280 --> 00:15:56,359 Marbled four-eyed frogs 250 00:15:56,360 --> 00:15:59,959 live at the highest altitude of any frog on Earth. 251 00:15:59,960 --> 00:16:01,919 [playful music continues] 252 00:16:01,920 --> 00:16:07,200 Every year, females must breed in pools formed by glacial meltwater. 253 00:16:08,720 --> 00:16:10,360 But their world is changing. 254 00:16:10,880 --> 00:16:14,560 The glacier is retreating further up the mountains. 255 00:16:18,480 --> 00:16:20,960 Each year, she climbs higher, 256 00:16:22,080 --> 00:16:24,040 enduring hotter days, 257 00:16:25,200 --> 00:16:26,599 but also... 258 00:16:26,600 --> 00:16:27,799 [soft lapping] 259 00:16:27,800 --> 00:16:29,440 ...colder nights. 260 00:16:31,400 --> 00:16:32,880 And that's become 261 00:16:33,760 --> 00:16:35,479 a real problem. 262 00:16:35,480 --> 00:16:40,280 [ominous music] 263 00:16:41,960 --> 00:16:44,000 The temperature is dropping fast. 264 00:16:45,480 --> 00:16:47,000 She needs to find shelter. 265 00:16:47,600 --> 00:16:49,999 [ice crackling] 266 00:16:50,000 --> 00:16:52,000 But as her muscles chill, 267 00:16:52,560 --> 00:16:54,840 they are starting to seize up. 268 00:16:57,160 --> 00:17:00,360 The deeper underground, the safer she'll be. 269 00:17:02,480 --> 00:17:06,360 But a clear sky means extreme cold is on its way. 270 00:17:08,120 --> 00:17:10,239 [heartbeat thumping] 271 00:17:10,240 --> 00:17:12,400 [thumping continues] 272 00:17:15,320 --> 00:17:16,479 On these nights, 273 00:17:16,480 --> 00:17:17,640 the ice... 274 00:17:18,320 --> 00:17:19,680 is relentless. 275 00:17:20,640 --> 00:17:22,719 [ice crackling] 276 00:17:22,720 --> 00:17:24,559 [tense music] 277 00:17:24,560 --> 00:17:26,360 [ice crackling] 278 00:17:27,440 --> 00:17:30,879 Its reach stretches far beneath the surface. 279 00:17:30,880 --> 00:17:33,520 [tense music continues] 280 00:17:36,320 --> 00:17:38,400 [heartbeat thumping] 281 00:17:38,520 --> 00:17:40,680 [faint crackling] 282 00:17:48,280 --> 00:17:50,480 [crackling increases] 283 00:18:00,160 --> 00:18:01,280 Her journey 284 00:18:03,560 --> 00:18:05,320 looks to be over. 285 00:18:10,160 --> 00:18:13,440 She is frozen solid. 286 00:18:14,520 --> 00:18:16,360 [bleak music] 287 00:18:19,840 --> 00:18:25,000 [soft dramatic music] 288 00:18:26,120 --> 00:18:28,159 [gentle flute music] 289 00:18:28,160 --> 00:18:30,600 As the world warms up, 290 00:18:31,520 --> 00:18:34,959 something strange happens beneath the surface. 291 00:18:34,960 --> 00:18:39,560 [crackling] 292 00:18:40,560 --> 00:18:43,119 These marbled four-eyed frogs, 293 00:18:43,120 --> 00:18:46,080 living in the highest reaches of the Andes, 294 00:18:46,880 --> 00:18:49,360 have evolved a remarkable talent 295 00:18:50,360 --> 00:18:52,320 almost beyond belief, 296 00:18:53,600 --> 00:18:55,200 and never filmed before. 297 00:18:57,000 --> 00:18:58,880 They can freeze solid 298 00:19:00,040 --> 00:19:02,400 and come back from the dead 299 00:19:03,600 --> 00:19:05,560 every single day. 300 00:19:06,120 --> 00:19:07,999 [heartbeat thumping] 301 00:19:08,000 --> 00:19:10,120 [flute music continues] 302 00:19:12,200 --> 00:19:16,400 [bright orchestral music] 303 00:19:17,680 --> 00:19:21,960 The only frog in the world that can do this. 304 00:19:22,880 --> 00:19:25,240 [orchestral music continues] 305 00:19:32,200 --> 00:19:34,440 She drives forward once more. 306 00:19:35,400 --> 00:19:38,400 [distant chirping] 307 00:19:39,480 --> 00:19:42,439 The frog that cheats death every night 308 00:19:42,440 --> 00:19:45,000 is ready to continue her journey, 309 00:19:45,720 --> 00:19:48,559 and, with luck, meet a new mate. 310 00:19:48,560 --> 00:19:50,680 [chirping] 311 00:19:54,560 --> 00:19:57,720 - [chirping] - [splashes] 312 00:19:58,640 --> 00:20:01,600 This frog may be a miracle worker, 313 00:20:02,280 --> 00:20:04,920 but its future is not certain. 314 00:20:07,720 --> 00:20:11,680 The glaciers on which it and so many other animals depend 315 00:20:12,240 --> 00:20:13,280 are in trouble. 316 00:20:16,720 --> 00:20:17,760 They're shrinking 317 00:20:18,360 --> 00:20:20,600 due to a global rise in temperature. 318 00:20:22,280 --> 00:20:24,159 Over the last 50 years, 319 00:20:24,160 --> 00:20:28,600 the neighboring Qori Kalis Glacier has halved in size. 320 00:20:29,480 --> 00:20:30,680 At the current rate, 321 00:20:31,480 --> 00:20:34,000 it will disappear entirely 322 00:20:34,760 --> 00:20:36,320 in just 30 more years. 323 00:20:37,640 --> 00:20:41,719 Which could be a disaster not just for the four-eyed frogs 324 00:20:41,720 --> 00:20:44,400 but for all life in these mountains. 325 00:20:47,160 --> 00:20:48,319 [birds chirping] 326 00:20:48,320 --> 00:20:51,639 As water from the sky-high glaciers of the Andes 327 00:20:51,640 --> 00:20:54,560 cascades down the steep slopes, 328 00:20:55,160 --> 00:21:00,039 it creates a unique network of 100,000 rivers. 329 00:21:00,040 --> 00:21:01,560 [water rushing] 330 00:21:04,000 --> 00:21:06,879 Water that is crucial both for wildlife 331 00:21:06,880 --> 00:21:08,560 and for millions of people. 332 00:21:11,680 --> 00:21:14,560 Most of these rivers are ice-cold, 333 00:21:16,000 --> 00:21:19,320 but this one in Argentina is near boiling, 334 00:21:21,000 --> 00:21:26,760 superheated by geothermal activity deep underground. 335 00:21:27,160 --> 00:21:32,000 What in their right mind would live in these dangerous waters? 336 00:21:35,400 --> 00:21:37,879 In the mountain rivers of the Andes, 337 00:21:37,880 --> 00:21:42,159 only one animal can master turbulent waters 338 00:21:42,160 --> 00:21:45,639 that range from boiling point to near-freezing. 339 00:21:45,640 --> 00:21:47,119 [dramatic music] 340 00:21:47,120 --> 00:21:49,080 A torrent duck. 341 00:21:49,760 --> 00:21:51,200 Not just any duck, 342 00:21:51,960 --> 00:21:53,120 but a super duck. 343 00:21:54,560 --> 00:21:56,239 He comes fully equipped... 344 00:21:56,240 --> 00:21:57,319 [quacks] 345 00:21:57,320 --> 00:21:59,640 ...with heat-resistant feathers, 346 00:22:00,280 --> 00:22:01,840 armor-plated leg skin, 347 00:22:02,720 --> 00:22:04,840 and built-in protective goggles, 348 00:22:05,640 --> 00:22:07,240 a third eyelid. 349 00:22:08,320 --> 00:22:12,640 This specialist gear means he can survive a daily temperature range 350 00:22:13,480 --> 00:22:16,160 of minus 13 degrees above water 351 00:22:16,680 --> 00:22:20,360 to plus 122 degrees under water. 352 00:22:23,440 --> 00:22:26,680 All to reach a sumptuous buffet. 353 00:22:27,520 --> 00:22:30,039 These superheated waters 354 00:22:30,040 --> 00:22:33,520 are a hothouse for growing fly larvae 355 00:22:34,440 --> 00:22:36,400 in the thousands. 356 00:22:39,400 --> 00:22:43,200 Delicious and nutritious for a duck. 357 00:22:45,960 --> 00:22:48,439 Especially one with a family. 358 00:22:48,440 --> 00:22:51,239 [ducklings chirping] 359 00:22:51,240 --> 00:22:56,119 These baby super ducks must find their own food from day one. 360 00:22:56,120 --> 00:22:57,640 [ducklings chirping] 361 00:22:59,120 --> 00:23:03,520 Luckily, they are equipped for extreme swimming too. 362 00:23:05,120 --> 00:23:08,240 Tail feathers develop early to act as a rudder, 363 00:23:08,880 --> 00:23:11,560 and huge feet provide propulsion. 364 00:23:12,680 --> 00:23:13,760 [chirps] 365 00:23:14,560 --> 00:23:19,999 Downy feathers trap air to keep them insulated and afloat. 366 00:23:20,000 --> 00:23:22,319 - [duckling chirping] - [quacks] 367 00:23:22,320 --> 00:23:25,919 They already have superhero swagger. 368 00:23:25,920 --> 00:23:28,360 [playful music] 369 00:23:31,520 --> 00:23:32,719 [peeps] 370 00:23:32,720 --> 00:23:37,000 But their buoyant down has, well, a downside. 371 00:23:37,600 --> 00:23:39,479 Where the water is deep, 372 00:23:39,480 --> 00:23:42,760 those delicious bugs are out of reach. 373 00:23:43,560 --> 00:23:45,960 [playful music continues] 374 00:23:50,400 --> 00:23:53,560 They need to find shallower feeding grounds. 375 00:23:57,600 --> 00:24:00,240 But as the family heads downstream, 376 00:24:00,960 --> 00:24:03,199 things get dangerous. 377 00:24:03,200 --> 00:24:05,280 [rushing] 378 00:24:07,440 --> 00:24:09,559 [tense music] 379 00:24:09,560 --> 00:24:11,120 The parents lead the way. 380 00:24:11,760 --> 00:24:12,760 [quacks] 381 00:24:13,520 --> 00:24:14,519 [low quack] 382 00:24:14,520 --> 00:24:16,319 The ducklings can't yet fly. 383 00:24:16,320 --> 00:24:17,880 They will have to swim for it 384 00:24:18,480 --> 00:24:21,279 in these deadly, scalding waters. 385 00:24:21,280 --> 00:24:22,760 [quacks] 386 00:24:23,520 --> 00:24:25,119 - [chirps] - [duck quacking] 387 00:24:25,120 --> 00:24:28,559 Only a third survive to adulthood. 388 00:24:28,560 --> 00:24:29,720 [quacks] 389 00:24:30,520 --> 00:24:31,519 [chirps] 390 00:24:31,520 --> 00:24:33,159 Where they make their jump... 391 00:24:33,160 --> 00:24:34,320 [quacks] 392 00:24:35,320 --> 00:24:37,000 - ...decides their fate. - [chirps] 393 00:24:39,480 --> 00:24:44,680 [tense music continues] 394 00:24:48,600 --> 00:24:50,240 [chirping] 395 00:24:54,600 --> 00:24:56,640 [dramatic music] 396 00:24:57,520 --> 00:25:00,360 As this chick's about to find out. 397 00:25:04,520 --> 00:25:07,600 [dramatic music continues] 398 00:25:09,200 --> 00:25:13,520 The parents try to keep tabs on each of the chicks. 399 00:25:15,360 --> 00:25:16,439 [quacks] 400 00:25:16,440 --> 00:25:19,079 - But in these raging waters... - [duckling chirps] 401 00:25:19,080 --> 00:25:20,320 [duck quacks] 402 00:25:22,160 --> 00:25:24,439 ...that's not always possible. 403 00:25:24,440 --> 00:25:26,560 [dramatic music continues] 404 00:25:31,880 --> 00:25:32,919 [chirps] 405 00:25:32,920 --> 00:25:35,480 [dramatic music continues] 406 00:25:38,400 --> 00:25:40,359 As the chick scrambles out, 407 00:25:40,360 --> 00:25:43,880 he must quickly look for another route to get back to his family. 408 00:25:46,240 --> 00:25:48,639 [tense music] 409 00:25:48,640 --> 00:25:49,720 [chirps] 410 00:25:51,200 --> 00:25:53,400 [tense music continues] 411 00:25:57,360 --> 00:25:58,360 Now... 412 00:25:59,160 --> 00:26:00,399 it's all or nothing. 413 00:26:00,400 --> 00:26:03,040 [tense music intensifies] 414 00:26:19,520 --> 00:26:21,119 [jubilant music] 415 00:26:21,120 --> 00:26:24,359 His air-filled feathers pull him to the surface. 416 00:26:24,360 --> 00:26:26,439 [bright music] 417 00:26:26,440 --> 00:26:28,999 Saved by their superpowers, 418 00:26:29,000 --> 00:26:33,120 the whole family has reached the shallow feeding ground. 419 00:26:34,520 --> 00:26:36,199 A bug buffet 420 00:26:36,200 --> 00:26:38,799 now within reach for all. 421 00:26:38,800 --> 00:26:41,799 [bright music continues] 422 00:26:41,800 --> 00:26:43,799 If you've got what it takes, 423 00:26:43,800 --> 00:26:45,359 this wild river, 424 00:26:45,360 --> 00:26:47,839 born of fire and ice, 425 00:26:47,840 --> 00:26:49,639 can be a kind of paradise... 426 00:26:49,640 --> 00:26:50,719 [quack echoes] 427 00:26:50,720 --> 00:26:52,320 ...for a duck. 428 00:26:53,000 --> 00:26:56,359 {\an8}[mystical music] 429 00:26:56,360 --> 00:27:00,680 {\an8}Traveling south, the Andes spread to their widest point. 430 00:27:01,600 --> 00:27:06,320 {\an8}Here, the highest peaks block moisture from both the Amazon and the Pacific, 431 00:27:06,880 --> 00:27:10,680 {\an8}which helps create a desert like no other, 432 00:27:11,240 --> 00:27:12,640 {\an8}the Atacama. 433 00:27:15,400 --> 00:27:18,080 The driest place on Earth. 434 00:27:19,200 --> 00:27:25,320 so arid that NASA uses it to test equipment destined for Mars. 435 00:27:27,040 --> 00:27:29,279 But in exceptional years, 436 00:27:29,280 --> 00:27:33,760 a miracle of nature changes everything. 437 00:27:36,600 --> 00:27:38,319 [light music] 438 00:27:38,320 --> 00:27:44,040 The Atacama Desert in northern Chile is the driest on Earth. 439 00:27:46,080 --> 00:27:48,479 But maybe once a decade, 440 00:27:48,480 --> 00:27:50,639 a stormfront from the west 441 00:27:50,640 --> 00:27:54,319 can have enough power to reach around the mountains... 442 00:27:54,320 --> 00:27:56,640 [thunder rumbling] 443 00:27:57,400 --> 00:27:58,600 ...and bring salvation. 444 00:27:59,880 --> 00:28:01,399 Torrential rain. 445 00:28:01,400 --> 00:28:04,439 [pattering] 446 00:28:04,440 --> 00:28:06,479 [mystical music] 447 00:28:06,480 --> 00:28:10,360 Summoning one of the rarest wonders in nature. 448 00:28:13,000 --> 00:28:16,559 What is known as a "superbloom." 449 00:28:16,560 --> 00:28:19,160 [mystical music continues] 450 00:28:22,240 --> 00:28:25,599 Billions of seeds that have been sleeping in the sand, 451 00:28:25,600 --> 00:28:27,480 some for more than ten years, 452 00:28:28,120 --> 00:28:30,920 can finally burst into life. 453 00:28:33,400 --> 00:28:37,920 [mystical music rises] 454 00:28:39,320 --> 00:28:43,719 This new world draws strange creatures from beyond the desert. 455 00:28:43,720 --> 00:28:44,960 [chittering] 456 00:28:45,560 --> 00:28:47,720 The coruro, a mountain rodent, 457 00:28:48,760 --> 00:28:51,160 seldom seen on the surface. 458 00:28:53,320 --> 00:28:55,880 A giant caterpillar-hunting wasp 459 00:28:56,440 --> 00:28:58,040 brings food to her young. 460 00:28:59,080 --> 00:29:01,800 [wondrous music] 461 00:29:04,600 --> 00:29:06,319 And like the rest, 462 00:29:06,320 --> 00:29:08,319 a family of burrowing owls 463 00:29:08,320 --> 00:29:10,439 packs a whole lifetime 464 00:29:10,440 --> 00:29:13,000 into these few weeks of plenty. 465 00:29:14,800 --> 00:29:17,600 Because as fast as the superbloom emerges, 466 00:29:22,120 --> 00:29:24,640 it's reclaimed by the desert. 467 00:29:25,800 --> 00:29:29,600 And life begins the long wait for water once more. 468 00:29:30,440 --> 00:29:33,480 [music fades] 469 00:29:35,080 --> 00:29:38,600 Just to the north is Salar de Uyuni, 470 00:29:39,280 --> 00:29:41,560 the largest salt flat on Earth. 471 00:29:42,400 --> 00:29:43,799 [dramatic music] 472 00:29:43,800 --> 00:29:45,879 When the rains reach here... 473 00:29:45,880 --> 00:29:47,680 [thunder rumbling] 474 00:29:48,640 --> 00:29:51,960 ...another brief wonder of nature is created. 475 00:29:55,360 --> 00:29:57,040 A giant mirror 476 00:29:57,760 --> 00:29:59,600 larger than Yellowstone, 477 00:30:03,440 --> 00:30:07,279 set beneath the clearest skies on Earth. 478 00:30:07,280 --> 00:30:10,520 [grand music] 479 00:30:11,080 --> 00:30:13,799 Here, we look into deep space 480 00:30:13,800 --> 00:30:16,079 for answers light-years away... 481 00:30:16,080 --> 00:30:18,320 [grand music continues] 482 00:30:18,920 --> 00:30:21,760 ...while an exquisite vision of the universe 483 00:30:22,320 --> 00:30:23,680 comes to our feet. 484 00:30:24,360 --> 00:30:26,640 [grand music rises] 485 00:30:29,160 --> 00:30:32,000 But it, too, doesn't last long. 486 00:30:33,160 --> 00:30:35,640 [crackling] 487 00:30:37,760 --> 00:30:41,560 And soon, all that remains is a salt crust, 488 00:30:43,000 --> 00:30:46,160 a world utterly hostile to life. 489 00:30:48,800 --> 00:30:52,720 And yet, for some, it's home. 490 00:30:53,280 --> 00:30:54,520 [rustling] 491 00:31:02,920 --> 00:31:06,040 [eerie music] 492 00:31:10,680 --> 00:31:12,800 A salt flat lizard. 493 00:31:14,800 --> 00:31:18,560 A young male on the lookout for a territory. 494 00:31:21,360 --> 00:31:23,080 There's no time to waste. 495 00:31:24,120 --> 00:31:27,440 [valiant music] 496 00:31:34,200 --> 00:31:38,080 [valiant music continues] 497 00:31:42,720 --> 00:31:44,959 [flies buzzing] 498 00:31:44,960 --> 00:31:46,520 An oasis? 499 00:31:47,160 --> 00:31:48,480 No. 500 00:31:49,240 --> 00:31:51,360 This water is full of salt. 501 00:31:53,640 --> 00:31:55,159 He can't drink it, 502 00:31:55,160 --> 00:31:58,600 but these brine flies can, 503 00:32:00,760 --> 00:32:05,040 converting it into freshwater inside their bodies. 504 00:32:07,760 --> 00:32:09,439 It's a perfect combo meal. 505 00:32:09,440 --> 00:32:10,520 A drink... 506 00:32:11,680 --> 00:32:13,560 with a side of flies. 507 00:32:14,320 --> 00:32:15,800 [swooshes] 508 00:32:16,480 --> 00:32:18,439 [valiant music resumes] 509 00:32:18,440 --> 00:32:19,959 But for a rookie, 510 00:32:19,960 --> 00:32:23,159 this is going to take some practice. 511 00:32:23,160 --> 00:32:25,360 [fly buzzing] 512 00:32:28,680 --> 00:32:32,799 Two hundred flies contain just a thimble of water. 513 00:32:32,800 --> 00:32:34,279 [flies buzzing] 514 00:32:34,280 --> 00:32:37,919 He's sure got his work cut out. 515 00:32:37,920 --> 00:32:40,120 [valiant music] 516 00:32:40,760 --> 00:32:43,000 [flies buzzing] 517 00:32:46,640 --> 00:32:48,040 Almost there. 518 00:32:48,520 --> 00:32:50,920 [valiant music continues] 519 00:32:53,280 --> 00:32:54,520 - Nailed it! - [crunches] 520 00:32:55,160 --> 00:32:57,120 [playful music] 521 00:33:09,320 --> 00:33:11,240 [flies buzzing] 522 00:33:12,320 --> 00:33:14,960 Could life get any better? 523 00:33:16,680 --> 00:33:20,120 [tense music] 524 00:33:21,480 --> 00:33:24,240 Maybe it can. 525 00:33:35,520 --> 00:33:38,960 It's a female salt flat lizard 526 00:33:39,800 --> 00:33:43,879 wafting a powerful, seductive scent into the air. 527 00:33:43,880 --> 00:33:45,920 [enticing music] 528 00:33:51,280 --> 00:33:54,600 What young flycatcher could resist? 529 00:34:00,960 --> 00:34:04,760 But all is not as it seems. 530 00:34:07,160 --> 00:34:09,480 [suspenseful music] 531 00:34:10,600 --> 00:34:12,320 Another male. 532 00:34:14,200 --> 00:34:18,759 She will only mate with the strongest males, 533 00:34:18,760 --> 00:34:24,040 dominant enough to hold the precious waterfront territories. 534 00:34:25,440 --> 00:34:29,880 And she wants to see what the young flycatcher is made of. 535 00:34:31,440 --> 00:34:34,240 [dramatic music] 536 00:34:38,520 --> 00:34:40,640 She's set him up. 537 00:34:43,440 --> 00:34:45,079 - It's trial... - [swooshes] 538 00:34:45,080 --> 00:34:46,159 ...by combat. 539 00:34:46,160 --> 00:34:48,760 [dramatic music continues] 540 00:34:53,960 --> 00:34:56,960 [intense music] 541 00:34:59,680 --> 00:35:02,760 [intense music continues] 542 00:35:03,600 --> 00:35:04,800 Overpowered, 543 00:35:05,720 --> 00:35:09,320 and now in deeper trouble than he knows. 544 00:35:10,600 --> 00:35:13,240 Every inch of the water's edge 545 00:35:13,840 --> 00:35:16,440 is controlled by paired-up power couples... 546 00:35:18,080 --> 00:35:20,159 [dramatic music] 547 00:35:20,160 --> 00:35:21,839 ...who won't share. 548 00:35:21,840 --> 00:35:25,680 [dramatic music intensifies] 549 00:35:30,720 --> 00:35:33,320 [vigorous music] 550 00:35:40,320 --> 00:35:44,680 [vigorous music continues] 551 00:35:46,600 --> 00:35:48,960 Retreat is his only option. 552 00:35:50,000 --> 00:35:52,520 [vigorous music continues] 553 00:35:58,080 --> 00:36:01,479 [mischievous music] 554 00:36:01,480 --> 00:36:05,920 He's not ready to take on the big males right now. 555 00:36:07,400 --> 00:36:10,159 But he is alive 556 00:36:10,160 --> 00:36:12,639 and has learned valuable lessons. 557 00:36:12,640 --> 00:36:16,040 [enticing music] 558 00:36:17,960 --> 00:36:20,359 Well... maybe. 559 00:36:20,360 --> 00:36:22,960 [mischievous music] 560 00:36:26,520 --> 00:36:29,840 Reaching the highest point in our whole Americas journey, 561 00:36:30,320 --> 00:36:33,000 we ascend to over 19,000 feet, 562 00:36:34,440 --> 00:36:37,720 where the salt flats become salt lakes. 563 00:36:40,080 --> 00:36:46,160 Each one a unique, toxic cocktail of metals, minerals, and microorganisms. 564 00:36:48,960 --> 00:36:51,639 [eerie music] 565 00:36:51,640 --> 00:36:55,760 The most extraordinary of all is Laguna Colorada, 566 00:36:57,040 --> 00:37:00,559 a hellscape where morning ice has a daily battle 567 00:37:00,560 --> 00:37:04,120 with the strongest UV radiation on Earth. 568 00:37:05,240 --> 00:37:08,040 More than double that of Death Valley. 569 00:37:12,880 --> 00:37:15,199 And yet, every year, 570 00:37:15,200 --> 00:37:19,560 it's home to the most spectacular event in the Andes. 571 00:37:22,920 --> 00:37:26,399 The Toxic Red Lake of the High Andes. 572 00:37:26,400 --> 00:37:28,640 [grim music] 573 00:37:33,040 --> 00:37:37,320 It takes a special kind of toughness to survive here. 574 00:37:43,440 --> 00:37:47,079 But once a year, this lake becomes the setting 575 00:37:47,080 --> 00:37:50,760 for the greatest party in the Andes. 576 00:37:59,480 --> 00:38:02,440 Although not everyone is invited. 577 00:38:04,680 --> 00:38:07,000 [delicate music] 578 00:38:10,560 --> 00:38:13,159 Right now, this world of extremes 579 00:38:13,160 --> 00:38:16,720 plays host to James' flamingos. 580 00:38:18,560 --> 00:38:21,040 [flamingos trilling] 581 00:38:27,440 --> 00:38:29,879 They gather here from across the Andes 582 00:38:29,880 --> 00:38:31,840 in the thousands 583 00:38:34,000 --> 00:38:36,320 hoping to find a mate. 584 00:38:37,400 --> 00:38:41,680 [chirping] 585 00:38:44,560 --> 00:38:48,920 Males and females might appear almost identical, 586 00:38:49,480 --> 00:38:52,320 but they know the difference. 587 00:38:53,280 --> 00:38:55,760 [chirping] 588 00:38:59,840 --> 00:39:02,279 They all want to look their best, 589 00:39:02,280 --> 00:39:04,600 and the pinker the better. 590 00:39:05,440 --> 00:39:07,440 The secrets to their success? 591 00:39:08,040 --> 00:39:09,639 Tough-skinned long legs 592 00:39:09,640 --> 00:39:12,160 letting them wade through the caustic lake. 593 00:39:17,560 --> 00:39:22,239 And a unique bill that filters out microscopic life from the toxic water. 594 00:39:22,240 --> 00:39:24,920 [chirping] 595 00:39:25,480 --> 00:39:28,239 Eating this food turns their feathers pinker, 596 00:39:28,240 --> 00:39:30,759 making them more desirable. 597 00:39:30,760 --> 00:39:32,679 [all chirping] 598 00:39:32,680 --> 00:39:35,479 But life is about to get more complicated 599 00:39:35,480 --> 00:39:40,040 as the Laguna becomes "Flamingo Central." 600 00:39:40,840 --> 00:39:44,519 Chilean and Andean flamingos are flying in too. 601 00:39:44,520 --> 00:39:46,720 [upbeat music] 602 00:39:47,280 --> 00:39:49,359 Both much bigger, but... 603 00:39:49,360 --> 00:39:51,560 - [trilling] - ...a lot less graceful. 604 00:39:52,520 --> 00:39:54,840 [squawking] 605 00:39:55,640 --> 00:39:58,280 [comical music] 606 00:40:02,160 --> 00:40:06,000 Crowds begin to build to 40,000 strong. 607 00:40:06,840 --> 00:40:09,840 And then, on an unseen cue, 608 00:40:10,280 --> 00:40:12,360 a dance-off begins. 609 00:40:13,400 --> 00:40:16,480 [upbeat jazzy music] 610 00:40:20,640 --> 00:40:22,759 The smaller James' are in danger 611 00:40:22,760 --> 00:40:25,999 of being pushed out before it even begins. 612 00:40:26,000 --> 00:40:29,160 [jazzy music continues] 613 00:40:30,360 --> 00:40:31,799 Over four feet tall, 614 00:40:31,800 --> 00:40:35,439 the Chileans can strut in the deep water... 615 00:40:35,440 --> 00:40:38,520 [jazzy music continues] 616 00:40:39,160 --> 00:40:41,600 ...while the enigmatic Andeans 617 00:40:42,520 --> 00:40:44,319 rumba by the smoke machine. 618 00:40:44,320 --> 00:40:48,200 [jazzy music continues] 619 00:40:49,200 --> 00:40:53,200 But at last, the James' get their groove on too. 620 00:40:55,840 --> 00:40:59,359 A tango at the top of the world. 621 00:40:59,360 --> 00:41:02,200 [jazzy music continues] 622 00:41:10,800 --> 00:41:13,440 These courtship dances last for weeks. 623 00:41:20,120 --> 00:41:22,399 One by one, lovers unite... 624 00:41:22,400 --> 00:41:25,640 [jazzy music continues] 625 00:41:26,400 --> 00:41:28,639 ...as eventually they find a mate. 626 00:41:28,640 --> 00:41:32,040 [jazzy music continues] 627 00:41:40,440 --> 00:41:44,200 But until then, the dance continues. 628 00:41:46,520 --> 00:41:50,040 The greatest show in the greatest mountain range 629 00:41:50,760 --> 00:41:52,120 in the Americas. 630 00:41:54,840 --> 00:41:57,640 [epic orchestral music]