German scientists design an inhaler that protects lungs against air pollution and expect it to be available as an inexpensive, over-the-counter product this year. Roselle Chen reports.
01:27
01:15
01:41
00:49
00:59
00:54
01:52
01:15
01:38
01:38
01:35
01:51
03:10
01:06
01:27
01:02
01:29
01:55
01:16
00:48
02:00
01:27
01:42
01:16
01:55
00:57
01:16
01:15
01:00
01:26
01:47
00:47
03:03
02:08
01:04
01:22
01:29
02:51
01:22
01:23
00:49
00:59
00:54
01:06
01:02
00:48
01:01
01:26
01:16
01:08
00:49
00:57
00:59
00:29
00:53
00:48
01:47
00:36
00:19
00:45
01:23
01:32
01:54
01:41
01:38
01:35
03:10
01:15
01:07:58
05:11
03:20
01:14
01:00
01:35
01:37
01:36
01:06
01:32
02:59
01:14
01:46
01:55
01:47
00:47
01:45
01:31
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
01:38
00:47
03:31
01:08
00:49
02:14
03:40
00:58
01:53
04:10
01:06
00:40
01:17
01:18
01:20
01:12
01:19
01:09
02:26
03:18