Environmentally-conscious residents in California can make an extra contribution to improving air quality by installing roofing shingles loaded with smog-absorbing granules that take pollution out of the air and convert it into water, according to the company that makes them. Francesca Lynagh reports.
01:10
01:28
01:03
02:02
01:09
02:01
02:09
01:20
01:36
01:36
01:24
02:50
01:40
01:50
01:12
00:47
01:56
01:32
01:26
01:08
01:44
00:31
01:22
01:10
01:01
01:05
02:00
01:29
01:06
01:41
01:06
01:18
01:03
01:28
01:17
01:02
01:11
01:02
01:00
01:00
02:13
01:10
01:03
01:15
01:32
01:12
01:16
01:18
01:32
01:19
02:07
00:47
01:27
01:22
01:25
01:21
00:37
01:15
00:27
01:18
01:12
01:18
00:59
00:59
05:00
01:24
02:18
02:07
01:39
00:59
02:03
01:07
01:07
01:34
01:34
05:19
01:52
01:07
01:35
02:13
02:02
02:02
01:16
01:26
01:26
01:01
02:52
01:45
01:08
01:19
01:16
00:49
01:01
01:24
02:20
00:49
02:04
01:22
00:36
01:38
01:28
01:24
01:50
02:10
01:14
02:04
01:04
01:53
01:14
01:08
01:34
01:34
01:19
01:31
01:59
00:38
02:19
01:27
01:21
01:15