| ▲ | otterley 3 hours ago | |
Which alternative are you thinking of? | ||
| ▲ | bob1029 an hour ago | parent [-] | |
Allowing methane to escape unburned | ||
| ▲ | otterley 3 hours ago | |
Which alternative are you thinking of? | ||
| ▲ | bob1029 an hour ago | parent [-] | |
Allowing methane to escape unburned | ||