Originally published on Mon November 25, 2013 6:49 pm
Investigators say they haven't determined why Adam Lanza killed 26 students and staff at Sandy Hook Elementary School in Newtown, Conn., last December. But they know he acted alone in that attack and his mother's murder, according to a summary report released weeks before the one-year anniversary of the shooting rampage.
Methane is the source of the gas we burn in stoves. You can also use it to make plastics, antifreeze or fertilizer. It comes out of underground deposits, but it also seeps up from swamps, landfills, even the stomachs of cows.
And while methane is valuable, a lot of it gets up into the atmosphere, where it becomes a very damaging greenhouse gas.