1 00:00:13,240 --> 00:00:16,000 ANDREW LINCOLN: Our weather is wilder... 2 00:00:18,000 --> 00:00:19,360 ..fiercer... 3 00:00:21,000 --> 00:00:23,000 ..more unpredictable... 4 00:00:25,000 --> 00:00:26,360 ..than ever before. 5 00:00:28,040 --> 00:00:30,000 JOURNALIST: Rare red weather warnings 6 00:00:30,000 --> 00:00:32,360 meaning there's a potential danger to life. 7 00:00:32,360 --> 00:00:35,520 Such weather is more frequent and intense. 8 00:00:35,520 --> 00:00:38,000 I think we had this conversation in our newsroom, you know, 9 00:00:38,000 --> 00:00:41,000 when they were evacuating all the people... 10 00:00:41,000 --> 00:00:42,520 what about the animals? 11 00:00:47,000 --> 00:00:49,000 For the first time... 12 00:00:51,000 --> 00:00:54,000 ..we see the planet's most extreme weather... 13 00:00:55,840 --> 00:00:57,000 ..through their eyes. 14 00:01:05,200 --> 00:01:08,000 When nature turns against them... 15 00:01:09,000 --> 00:01:11,000 ..they're not just enduring... 16 00:01:14,000 --> 00:01:16,000 ..they are fighting back... 17 00:01:19,000 --> 00:01:21,000 ..in remarkable ways. 18 00:01:24,680 --> 00:01:26,000 The bigger the storm... 19 00:01:29,000 --> 00:01:32,000 ..the greater the heroes. 20 00:01:32,000 --> 00:01:33,000 GROWLS 21 00:01:33,000 --> 00:01:34,000 TRUMPETS 22 00:01:34,000 --> 00:01:39,000 These animals are... a force of nature. 23 00:02:11,000 --> 00:02:12,040 JOURNALIST: This storm in particular 24 00:02:12,040 --> 00:02:14,000 is rapidly rotating right now. 25 00:02:16,000 --> 00:02:19,000 And it looks like it's about to drop an even bigger tornado. 26 00:02:21,840 --> 00:02:23,000 AUTOMATED: If you are outdoors, 27 00:02:23,000 --> 00:02:26,000 move to the closest substantial shelter. 28 00:02:26,000 --> 00:02:28,000 You have a basement, great. 29 00:02:28,000 --> 00:02:31,520 Seek shelter immediately. To keep you and your family safe. 30 00:02:40,360 --> 00:02:42,000 The Great Plains... 31 00:02:44,000 --> 00:02:46,000 ..of North America. 32 00:02:49,000 --> 00:02:54,840 More than 40 million acres of wild grasslands. 33 00:03:02,680 --> 00:03:06,000 Exposed and without a tree in sight... 34 00:03:09,000 --> 00:03:12,000 ..it's the last place you'd expect... 35 00:03:13,000 --> 00:03:15,000 ..to find an owl. 36 00:03:24,000 --> 00:03:28,040 Every spring, this wily female... 37 00:03:29,840 --> 00:03:31,000 ..and her partner for life... 38 00:03:33,000 --> 00:03:39,000 ..fly 1,700 miles from Mexico to be here. 39 00:03:39,000 --> 00:03:41,200 OWL SCREECHES 40 00:03:43,000 --> 00:03:47,680 Because this neighbourhood has everything they need... 41 00:03:49,200 --> 00:03:53,000 ..to raise a new family. 42 00:04:00,680 --> 00:04:03,360 Five inquisitive chicks... 43 00:04:06,000 --> 00:04:08,000 ..just one month old. 44 00:04:10,000 --> 00:04:15,000 It'll be another five weeks before they can look after themselves. 45 00:04:20,000 --> 00:04:21,840 Until then... 46 00:04:23,000 --> 00:04:26,000 ..Dad's on dinner duty. 47 00:04:41,000 --> 00:04:43,000 Mum's job... OWL SCREECHES 48 00:04:43,000 --> 00:04:44,200 ..is to keep them all safe. 49 00:04:47,000 --> 00:04:49,000 But there's always one... 50 00:04:50,000 --> 00:04:53,000 ..pushing the boundaries. 51 00:05:03,000 --> 00:05:04,680 These grasslands... 52 00:05:05,520 --> 00:05:10,520 ..are bursting with over 10,000 species of insect. 53 00:05:15,040 --> 00:05:19,520 Plenty to tempt a rookie hunter. 54 00:05:24,840 --> 00:05:28,000 But catching them takes practice. 55 00:05:33,000 --> 00:05:37,000 Change... is in the air. 56 00:05:41,360 --> 00:05:45,000 With all five of her chicks scattered far and wide... 57 00:05:47,000 --> 00:05:48,000 OWL SCREECHES 58 00:05:50,200 --> 00:05:52,000 ..keeping them all safe... 59 00:05:54,000 --> 00:05:57,000 ..is about to get a whole lot harder. 60 00:06:01,000 --> 00:06:05,000 The low-frequency rumble of infrasound... 61 00:06:05,000 --> 00:06:07,000 DISTANT RUMBLING 62 00:06:09,000 --> 00:06:10,520 ..signals the approach. 63 00:06:13,000 --> 00:06:14,680 ..of a monster. 64 00:06:18,040 --> 00:06:21,000 JOURNALIST: This storm is rapidly rotating right now. 65 00:06:21,000 --> 00:06:22,000 You need to be in your storm shelter. 66 00:06:22,000 --> 00:06:25,000 This is definitely gonna be causing damage as it continues 67 00:06:25,000 --> 00:06:26,000 to move to the east, north-east. 68 00:06:26,000 --> 00:06:29,680 AUTOMATED: If you are outdoors, take cover now. 69 00:06:29,680 --> 00:06:31,000 THUNDER RUMBLES 70 00:06:31,000 --> 00:06:36,000 Storms are intensifying across America's Midwest. 71 00:06:40,000 --> 00:06:43,520 Move to the closest substantial shelter and protect yourself 72 00:06:43,520 --> 00:06:45,000 from flying debris. 73 00:06:45,000 --> 00:06:50,200 They're producing more frequent cluster bombs of tornadoes. 74 00:06:52,000 --> 00:06:54,680 This is a very serious situation. 75 00:06:54,680 --> 00:06:56,000 This is a real live tornado. 76 00:07:00,000 --> 00:07:02,000 This experienced mother... 77 00:07:03,000 --> 00:07:05,000 ..will need her wits about her... 78 00:07:08,000 --> 00:07:10,000 ..to keep her chicks alive. 79 00:07:23,000 --> 00:07:24,840 As the planet warms... 80 00:07:28,000 --> 00:07:30,000 ..every kind of weather... 81 00:07:31,040 --> 00:07:34,680 ..is getting wilder. THUNDERCLAP 82 00:07:37,000 --> 00:07:40,000 JOURNALIST: The planet experienced its hottest year ever. 83 00:07:40,000 --> 00:07:43,000 Scientists say that we're entering a new era. 84 00:07:43,000 --> 00:07:45,000 Oh, BLEEP! 85 00:07:51,000 --> 00:07:55,000 Catastrophic flooding that used to happen perhaps once a century 86 00:07:55,000 --> 00:07:57,000 could soon be an annual event. 87 00:07:57,000 --> 00:08:01,000 Even in places often thought of as dry... 88 00:08:01,000 --> 00:08:04,000 JOURNALIST: An update now on the extreme flooding out of Kenya. 89 00:08:05,040 --> 00:08:08,000 ..it now pours. 90 00:08:18,000 --> 00:08:22,840 JOURNALIST: Record-level floods at the Maasai Mara National Reserve 91 00:08:22,840 --> 00:08:24,000 can now be revealed. 92 00:08:26,000 --> 00:08:30,000 And cheetahs are in over their heads. 93 00:08:55,000 --> 00:08:58,000 These ten-year-old cheetah brothers... 94 00:09:01,040 --> 00:09:03,000 ..have survived this long... 95 00:09:08,000 --> 00:09:09,840 ..by sticking together. 96 00:09:18,000 --> 00:09:20,000 ELEPHANT RUMBLES 97 00:09:23,000 --> 00:09:27,000 But they've never experienced rain like this. 98 00:09:33,000 --> 00:09:34,040 A month's worth... 99 00:09:37,840 --> 00:09:39,000 ..in just one day. 100 00:09:48,200 --> 00:09:51,680 Their prey has retreated north of the river... 101 00:09:53,000 --> 00:09:54,000 ..to higher ground. 102 00:10:00,520 --> 00:10:03,040 But they're cut off by a torrent... 103 00:10:20,000 --> 00:10:23,000 ..and boxed in by bigger... 104 00:10:23,000 --> 00:10:25,000 THUNDERCLAP 105 00:10:25,000 --> 00:10:27,000 ..more powerful enemies. 106 00:10:34,000 --> 00:10:38,000 But these old boys have learnt a few tricks. 107 00:10:53,000 --> 00:10:57,000 They check all their usual crossing points. 108 00:11:06,680 --> 00:11:09,000 But despite a break in the rains... 109 00:11:11,000 --> 00:11:15,000 ..the river still runs dangerously high. 110 00:11:30,000 --> 00:11:36,000 Cats don't like water at the best of times. 111 00:11:44,000 --> 00:11:47,520 CHEETAHS GROWL 112 00:12:02,000 --> 00:12:04,000 CHEETAH GROWLS 113 00:12:15,000 --> 00:12:20,000 Lean bodied... cheetahs are weak swimmers. 114 00:12:30,200 --> 00:12:33,680 The older brother is falling behind. 115 00:13:07,040 --> 00:13:09,000 CHEETAH GROWLS 116 00:13:19,000 --> 00:13:23,000 ANDREW LINCOLN: The cheetah brothers have beaten the floods. 117 00:13:27,000 --> 00:13:33,000 But for the older, weaker one, the ordeal is far from over. 118 00:13:49,000 --> 00:13:55,000 Lions will kill a cheetah to eliminate the competition. 119 00:14:06,000 --> 00:14:11,000 It could be the last time he sees his brother alive. 120 00:14:22,520 --> 00:14:25,000 Across our warming planet... 121 00:14:27,200 --> 00:14:31,000 ..animals are battling new extremes of weather. 122 00:14:34,040 --> 00:14:36,840 But things are hotting up fastest... 123 00:14:39,000 --> 00:14:40,680 ..at the poles. 124 00:14:43,000 --> 00:14:44,000 JOURNALIST: The latest assessment 125 00:14:44,000 --> 00:14:46,000 of the once reliably frozen Arctic... 126 00:14:46,000 --> 00:14:48,000 It's kind of a sea change. 127 00:14:48,000 --> 00:14:51,000 Temperatures there are rising at three times the global average. 128 00:14:51,000 --> 00:14:53,040 So, the Arctic is warming at around three, 129 00:14:53,040 --> 00:14:56,000 in some cases maybe four times faster than the rest of the globe. 130 00:14:56,000 --> 00:15:00,000 The ice sheets, they're melting at an accelerating rate. 131 00:15:11,000 --> 00:15:16,000 Spring has arrived two weeks early in the Arctic. 132 00:15:23,000 --> 00:15:25,000 POLAR BEAR GROWLS 133 00:15:37,000 --> 00:15:43,000 This young female polar bear survived the winter, 134 00:15:43,000 --> 00:15:46,000 hunting seals out on the sea ice. 135 00:15:49,000 --> 00:15:52,000 But the solid platform she relies on... 136 00:15:53,000 --> 00:15:55,000 ..is disappearing... 137 00:15:56,000 --> 00:16:00,000 ..along with her chances of a meal. 138 00:16:07,000 --> 00:16:10,360 To eat, she must head to shore... 139 00:16:12,000 --> 00:16:15,000 ..to track down new prey. 140 00:16:41,000 --> 00:16:43,000 With spring earlier than ever... 141 00:16:45,360 --> 00:16:50,000 ..ample grass feeds growing numbers of Svalbard reindeer. 142 00:16:55,000 --> 00:16:56,000 An opportunity... 143 00:16:59,000 --> 00:17:03,000 ..if she can close the distance. 144 00:17:12,360 --> 00:17:17,000 Stalking more like a leopard than a bear. 145 00:17:46,520 --> 00:17:48,000 Weighing quarter of a tonne... 146 00:17:50,000 --> 00:17:52,000 ..she can't keep up. 147 00:17:55,360 --> 00:17:57,000 GROWLS 148 00:18:09,000 --> 00:18:12,520 If she's to survive the long summer ahead... 149 00:18:14,000 --> 00:18:18,000 ..she'll have to push her body to the limit. 150 00:18:28,200 --> 00:18:30,000 A warming Arctic... 151 00:18:32,000 --> 00:18:35,000 ..has far-reaching consequences for our weather. 152 00:18:36,680 --> 00:18:39,000 MAN: The polar vortex is very cold, 153 00:18:39,000 --> 00:18:44,000 but when it starts to get warmer, it disrupts the jet stream. 154 00:18:45,000 --> 00:18:48,520 As cold air is pushed thousands of miles south... 155 00:18:51,000 --> 00:18:53,000 ..it collides with warmer currents... 156 00:18:55,200 --> 00:18:57,040 ..spinning out of control. 157 00:19:01,000 --> 00:19:02,000 Unleashing... 158 00:19:03,000 --> 00:19:05,000 CRASH 159 00:19:06,000 --> 00:19:08,000 ..devastation. 160 00:19:10,000 --> 00:19:12,000 JOURNALIST: It is a large tornado, 161 00:19:12,000 --> 00:19:13,000 so you need to be in your storm shelter. 162 00:19:13,000 --> 00:19:15,000 This is definitely gonna be causing damage. 163 00:19:18,000 --> 00:19:22,000 Tornadoes are growing more powerful each year. 164 00:19:39,000 --> 00:19:41,000 With Dad off hunting... 165 00:19:44,000 --> 00:19:49,000 ..and her five flightless chicks scattered across the plains... 166 00:19:54,000 --> 00:19:55,520 ..it's down to Mum... 167 00:19:57,000 --> 00:19:58,040 ..to save the day. 168 00:20:06,000 --> 00:20:08,000 And she's storm ready. 169 00:20:12,000 --> 00:20:15,000 She chose her neighbours wisely. 170 00:20:17,000 --> 00:20:18,840 Prairie dogs... 171 00:20:20,000 --> 00:20:24,000 ..who've dug out a whole town... CHIRPING 172 00:20:24,000 --> 00:20:26,000 ..underground. 173 00:20:31,040 --> 00:20:35,000 Mum bagged a burrow for her brood 174 00:20:35,000 --> 00:20:38,520 and will not be giving it up. 175 00:20:42,000 --> 00:20:43,360 OWL CHIRPS 176 00:20:46,000 --> 00:20:49,000 She's got 13 known calls. 177 00:20:49,000 --> 00:20:51,000 OWL CHIRPS 178 00:20:51,000 --> 00:20:53,000 But this... OWL CHIRPS 179 00:20:53,000 --> 00:20:55,680 ..is the most important. 180 00:20:58,000 --> 00:20:59,000 "Get back home. 181 00:21:00,000 --> 00:21:02,000 "Now!" 182 00:21:04,000 --> 00:21:05,000 CHIRPING 183 00:21:12,840 --> 00:21:15,000 That's four back safe and sound. 184 00:21:20,000 --> 00:21:22,000 WIND HOWLS 185 00:21:26,000 --> 00:21:28,000 But her most adventurous chick... 186 00:21:28,000 --> 00:21:30,000 CHIRPS 187 00:21:33,000 --> 00:21:35,000 ..is still out there... 188 00:21:37,000 --> 00:21:38,000 ..somewhere. 189 00:21:54,000 --> 00:21:56,000 Mum must save herself... 190 00:21:58,360 --> 00:22:01,000 ..for the good of her family. 191 00:22:12,000 --> 00:22:16,680 Animals are facing wilder weather than ever before... 192 00:22:19,000 --> 00:22:20,000 ..amplified... 193 00:22:22,000 --> 00:22:24,840 ..by heat trapped in our atmosphere... 194 00:22:28,000 --> 00:22:31,000 ..from the most powerful force... 195 00:22:32,000 --> 00:22:34,040 ..in the solar system. 196 00:22:36,000 --> 00:22:39,000 JOURNALIST: It's definitely coming. Get ready for some extreme heat. 197 00:22:46,000 --> 00:22:49,000 JOURNALIST: It's West Africa's worst heat wave in living memory. 198 00:22:51,000 --> 00:22:53,520 As global temperatures rise... 199 00:22:53,520 --> 00:22:56,000 JOURNALIST: The heat wave there has been devastating. 200 00:22:56,000 --> 00:22:58,000 Animals are dying. It's a really big deal. 201 00:22:58,000 --> 00:23:00,000 ..the hottest regions on Earth... 202 00:23:01,000 --> 00:23:02,000 ENGINE RUMBLES 203 00:23:03,000 --> 00:23:05,000 ..are only getting tougher. 204 00:23:06,360 --> 00:23:10,000 JOURNALIST: This drought with this type of heat 205 00:23:10,000 --> 00:23:11,000 has not happened before. 206 00:23:13,000 --> 00:23:15,520 Pushing our closest living relatives... 207 00:23:20,040 --> 00:23:23,000 ..to take the fight for survival... 208 00:23:25,000 --> 00:23:27,000 ..underground. 209 00:23:41,000 --> 00:23:43,520 Savannah chimpanzees... 210 00:23:45,200 --> 00:23:50,000 ..can't survive more than a week without water. 211 00:24:00,000 --> 00:24:03,000 After six months of drought in Senegal... 212 00:24:10,000 --> 00:24:14,000 ..the fruit trees are almost bare. 213 00:24:22,000 --> 00:24:28,000 Pushing their new 18-year-old leader out on a limb. 214 00:24:58,000 --> 00:25:01,000 When water is this hard to come by... 215 00:25:05,000 --> 00:25:06,000 ..peace... 216 00:25:09,000 --> 00:25:10,000 ..turns... 217 00:25:15,000 --> 00:25:16,000 ..to violence. 218 00:25:16,000 --> 00:25:18,000 SCREECHING 219 00:25:25,000 --> 00:25:26,680 SCREECHING 220 00:25:54,000 --> 00:25:56,000 Order must be restored... 221 00:25:59,000 --> 00:26:02,000 ..if they are to survive... 222 00:26:02,000 --> 00:26:04,000 and find water. 223 00:26:14,520 --> 00:26:17,200 But the rivers across their territory... 224 00:26:20,200 --> 00:26:22,000 ..have run dry. 225 00:26:43,000 --> 00:26:45,000 Finally... 226 00:26:45,000 --> 00:26:46,840 INSECTS BUZZING 227 00:26:46,840 --> 00:26:48,200 ..a few foetid puddles. 228 00:26:58,000 --> 00:27:00,000 Not safe to drink. 229 00:27:19,000 --> 00:27:25,000 But, undeterred, these clever chimps dig holes... 230 00:27:38,000 --> 00:27:42,000 ..and let the water seep through the gravel... 231 00:27:44,000 --> 00:27:49,000 ..filtering out 90% of the harmful bacteria. 232 00:28:05,000 --> 00:28:10,000 Chimpanzees are one of the only animals capable 233 00:28:10,000 --> 00:28:14,000 of such sophisticated survival techniques... 234 00:28:23,000 --> 00:28:27,680 ..passed down through the generations. 235 00:28:38,000 --> 00:28:43,360 But these meagre puddles will soon disappear. 236 00:28:50,000 --> 00:28:52,520 Responsibility weighs heaviest... 237 00:28:54,000 --> 00:28:55,360 ..on their young leader. 238 00:29:01,520 --> 00:29:05,000 He knows of another place there might be water. 239 00:29:10,040 --> 00:29:17,000 But his youthful readiness for risk could prove reckless. 240 00:29:34,000 --> 00:29:37,000 JOURNALIST: As heavy rain and flooding have continued, 241 00:29:37,000 --> 00:29:40,000 more heartbreak and destruction in Kenya. 242 00:29:42,840 --> 00:29:44,680 Intense overnight rains... 243 00:29:47,000 --> 00:29:50,000 ..piled on to the flooding crisis in the country. 244 00:30:00,000 --> 00:30:03,000 ANDREW LINCOLN: In one of the wettest months on record... 245 00:30:07,680 --> 00:30:11,000 ..the cheetah's beginning to realise 246 00:30:11,000 --> 00:30:14,000 the brother he's hunted with all his life... 247 00:30:16,360 --> 00:30:18,000 ..is never coming back. 248 00:30:55,000 --> 00:31:01,000 Taking down big prey on his own will be even harder. 249 00:31:21,000 --> 00:31:23,200 But this crafty old cat... 250 00:31:26,000 --> 00:31:28,680 ..can use the heavy rains... 251 00:31:30,000 --> 00:31:33,680 ..to tip the odds in his favour. 252 00:31:44,360 --> 00:31:47,000 Prey turn their backs to the storm... 253 00:31:51,000 --> 00:31:55,000 ..and rain dampens their senses... 254 00:32:00,000 --> 00:32:06,000 ..so he can sneak up closer than ever. 255 00:32:53,520 --> 00:32:58,000 Using his tail like a rudder, he locks on. 256 00:33:34,000 --> 00:33:38,000 This veteran hunter may be alone... 257 00:33:41,000 --> 00:33:46,040 ..but he has turned the extreme weather to his advantage. 258 00:34:10,040 --> 00:34:13,000 But to make it in a changing Arctic... 259 00:34:16,000 --> 00:34:21,000 ..the young polar bear is having to go against her very being. 260 00:34:25,040 --> 00:34:30,000 A small, solitary reindeer. 261 00:34:47,000 --> 00:34:52,000 She uses the ridge to mask her approach. 262 00:34:52,000 --> 00:34:55,000 GROWLING 263 00:35:28,000 --> 00:35:30,000 She's lost the upper hand... 264 00:35:32,520 --> 00:35:34,360 ..but won't give up the chase. 265 00:35:50,000 --> 00:35:51,000 Driving her quarry... 266 00:35:53,000 --> 00:35:57,000 ..into... a dead end. 267 00:36:17,000 --> 00:36:18,040 SPLASH 268 00:36:25,000 --> 00:36:28,000 It's a long way down to retrieve her dinner. 269 00:36:35,000 --> 00:36:38,000 While polar bear numbers are in decline... 270 00:36:38,000 --> 00:36:40,000 POLAR BEAR GROWLS 271 00:36:40,000 --> 00:36:44,000 ..the bears in Svalbard may be on the rise... 272 00:36:45,000 --> 00:36:50,000 ..thanks to their ability to adapt and to hunt on land. 273 00:37:16,000 --> 00:37:18,000 Sheltering in their bunker... 274 00:37:19,840 --> 00:37:24,000 ..the owl mum has kept four of her chicks alive. 275 00:37:33,360 --> 00:37:36,520 But the walls will have to hold strong. 276 00:37:36,520 --> 00:37:39,000 RUMBLING 277 00:37:39,000 --> 00:37:42,000 Overhead is a twister... 278 00:37:44,000 --> 00:37:47,360 ..with the energy of 10,000 tonnes of dynamite. 279 00:37:49,000 --> 00:37:50,360 CHICKS SCREECH 280 00:37:54,000 --> 00:37:56,000 And her most adventurous chick... 281 00:37:59,000 --> 00:38:00,840 ..is still out there. 282 00:38:15,000 --> 00:38:17,000 THUNDER RUMBLING 283 00:38:20,000 --> 00:38:22,000 On the American prairies... 284 00:38:25,200 --> 00:38:29,000 ..one of the most extreme storms on the planet... 285 00:38:31,000 --> 00:38:32,200 ..has finally passed. 286 00:38:40,000 --> 00:38:41,520 CHICKS SCREECHES 287 00:38:46,000 --> 00:38:49,000 OWL CHIRPS 288 00:38:53,000 --> 00:38:55,000 There's no sign of her lost chick. 289 00:39:02,840 --> 00:39:04,000 OWL CHIRPS 290 00:39:11,840 --> 00:39:13,000 But incredibly... 291 00:39:16,000 --> 00:39:19,000 ..he found his own bunker to hide in. 292 00:39:27,520 --> 00:39:32,000 Although the whole ordeal has been quite unsettling. 293 00:39:42,000 --> 00:39:46,200 A huge pellet of indigestible insect parts. 294 00:39:49,040 --> 00:39:55,000 Seems his first hunting trip alone was a little hard to stomach. 295 00:39:56,000 --> 00:39:58,000 SCREECHES 296 00:39:59,520 --> 00:40:01,000 Time... 297 00:40:02,000 --> 00:40:04,000 ..to face the music. 298 00:40:16,000 --> 00:40:17,840 CHICK SCREECHES 299 00:40:26,000 --> 00:40:30,000 Preening helps restore a bit of trust. 300 00:40:36,000 --> 00:40:38,000 And Dad's back too. 301 00:40:45,000 --> 00:40:49,000 This little family has weathered the storm. 302 00:40:54,000 --> 00:40:56,360 But in the last 30 years, 303 00:40:56,360 --> 00:41:01,000 the burrowing owl population here has halved. 304 00:41:05,000 --> 00:41:11,000 It's an uncertain future for even the wisest of mums. 305 00:41:32,000 --> 00:41:35,000 In one of the longest droughts they've ever known... 306 00:41:37,360 --> 00:41:42,000 ..the chimps have been searching for water for days. 307 00:41:53,680 --> 00:41:58,000 The pressure is on for their young leader. 308 00:42:05,520 --> 00:42:08,360 He's taking the troop on a daring raid... 309 00:42:10,000 --> 00:42:13,000 ..into an unfamiliar world... 310 00:42:15,000 --> 00:42:17,000 ..full of danger. 311 00:42:37,000 --> 00:42:39,000 A gold mine. 312 00:42:51,000 --> 00:42:52,000 ENGINE STARTS 313 00:43:03,680 --> 00:43:06,000 As the workers down tools for the day... 314 00:43:09,000 --> 00:43:11,000 ..the troop make their move. 315 00:43:33,000 --> 00:43:35,000 The camp is pockmarked... 316 00:43:37,000 --> 00:43:40,000 ..with unstable mine shafts. 317 00:43:48,000 --> 00:43:50,000 Deep wells... 318 00:43:54,000 --> 00:43:57,680 ..with a prize far more precious than gold. 319 00:44:04,000 --> 00:44:08,000 In a brand-new behaviour never filmed before... 320 00:44:09,000 --> 00:44:12,000 ..their leader descends first. 321 00:44:17,000 --> 00:44:22,000 Entering a maze of hand-dug tunnels 322 00:44:22,000 --> 00:44:25,000 up to 30m below ground. 323 00:44:38,840 --> 00:44:42,000 The troop's fate rests with him. 324 00:45:12,000 --> 00:45:17,000 Now the rest of the troop can follow his lead. 325 00:45:22,000 --> 00:45:24,000 Even the little ones... 326 00:45:25,000 --> 00:45:28,000 ..finally get to drink their fill. 327 00:45:42,000 --> 00:45:44,360 On this extreme Earth, 328 00:45:44,360 --> 00:45:50,000 clever and resourceful animal heroes 329 00:45:50,000 --> 00:45:55,000 are finding remarkable ways to stay alive. 330 00:45:59,840 --> 00:46:04,840 They are a force of nature.