As green energy vies with fossil fuels to convince people and governments it's a viable alternative, one father-and-son duo are putting it to the test in the most extreme conditions. Veteran polar explorer Robert Swan and his 23-year-old son Barney are hoping to become the first team to trek to the South Pole relying solely on renewable energy.
01:54
00:21
00:44
01:24
01:30
02:00
00:34
01:25
01:11
02:55
03:35
02:55
02:25
01:01
01:44
00:53
01:03
00:55
00:58
01:10
02:01
02:00
02:56
02:25
00:48
00:57
00:57
01:06
01:25
01:51
00:55
01:35
02:31
01:15
01:24
01:53
01:52
02:57
02:05
01:08
01:54
00:21
00:44
01:51
00:53
00:55
00:58
00:46
01:34
01:34
00:57
01:16
01:01
01:03
00:35
01:02
01:20
00:56
01:27
00:48
00:34
01:01
01:07
00:47
01:40
00:50
01:51
01:49
01:00
01:01
01:05
01:04
00:50
01:27
02:18
01:48
00:51
00:51
00:47
01:21
01:06
00:40
01:17
01:18
01:20
01:19
01:12
02:00
00:58
01:09
02:26
03:18
02:34
01:11
01:46
01:02
01:27
01:42
02:05
01:15