Scientists in Britain are hoping to find a sustainable way to stop the march of the voracious fall armyworm caterpillar that has infested Africa, without using pesticides. Stuart McDill reports.
01:03
01:16
00:28
01:28
01:26
02:05
01:55
01:17
00:45
01:20
01:33
01:55
01:01
01:51
01:15
01:08
01:10
01:53
02:18
01:13
01:47
01:03
01:49
01:26
01:39
01:31
01:09
00:41
00:52
02:39
01:01
01:27
01:01
01:20
01:53
01:06
01:07
01:28
02:02
01:27
01:03
01:16
00:28
01:41
01:09
01:13
01:13
00:58
00:32
01:31
01:31
00:58
01:26
01:49
00:57
01:40
00:28
01:04
02:01
01:23
01:10
01:06
00:50
01:46
00:28
01:26
00:51
01:35
01:04
01:21
01:28
01:54
00:39
00:40
01:29
01:37
01:11
03:09
01:44
01:05
01:38
01:26
02:56
01:17
01:08
01:17
01:32
01:19
01:42
01:35
01:41
02:08
01:51
01:51
01:20
01:02
01:34
02:56
01:20
01:39
01:03
01:16
01:50
00:53
03:21
01:33
01:21
01:22
02:18
01:16
01:42
01:25
01:27
02:27
02:27
01:30
01:51
01:43
01:07
00:44