Denver, Minneaopolis and Boston set to launch bike share programs in 2010.

H&M concedes that GM cotton could have slipped into its organic lines.

Factories, power plants and landfills face crackdown with EPA's new ozone proposal.

Male cleaner fish punish females for poor service.

Bicycles give way to automobiles, but e-bikes keep two-wheel tradition alive.

Score one for the environment.