Salmon

Heightening the dam will increase the size of California's largest reservoir, but it could also create problems for local fish and wildlife populations.

New research suggests that Chinook salmon are being run down by a growing population of killer whales.

Most scientists oppose Russ George's efforts to fix the world's climate. But who's going to do something about it?

Patagonia Clothing founder Yvon Chouinard almost became a food guru instead of an outdoor gear guru, but as his new enterprise shows, he's never given up on changing how the world eats.