This week's roundup comes alongside two green holidays, depending on what (or how) you like to celebrate.
Minority-owned businesses and low-income residents were cut out of the economic frenzy following the Deepwater Horizon spill.
OK, not really. He wants lots of other stuff too.
Maybe -- just maybe! -- Nat Geo's StarTalk will teach us that the best way to make people take science seriously is to find a way to laugh at it.
On Earth Day, Obama will call for protecting public lands from climate change. He should also call for an end to selling off publicly owned fossil fuels.
Check out the city's 592,130 street trees, representing 52 species, all at once.
A new study suggests China's tough new pollution standards might actually be working.
Farming changes may be inevitable, but that doesn't make their human cost any easier to bear. You can hear it in this farmer's voice.
For Earth Day, here's a look back at EPA successes, and a look ahead to the next big challenge: climate change.