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.
When the Whitney Museum of American Art announced the artists for its 2014 biennial, people took to the Internet to chime in about who's been included and who's been left out; the last biennial had been blasted for ignoring Latino artists. But when a new show opened at the Smithsonian American Art Museum featuring only Latino artists — "Our America: The Latino Presence in American Art" — it was blasted for other reasons.