gas versus hydrogen

14:19

1:06

4:39

13:12

4:49

1:51

12:08

3:02

7:27

3:40

3:25

10:52

6:23

11:45

16:49

1:00:05

11:04

8:12

13:05

20:02

9:58

10:40

11:00

3:46

1:31

12:11

11:07

1:50

5:16

2:58

3:13

14:28

16:31

1:17

3:33

4:59

1:44

8:38

9:39

1:18

5:53

1:22

2:00

2:15

1:35

11:42

1:39

56:47

4:34

10:26

10:33

14:03

13:06

1:07

4:13

18:22

5:27

11:55

2:41

4:18