Batteries included: New wind turbines and solar panels come with built-in storage

Solar and wind systems need batteries to store power for when the sun isn't shining or the wind isn't blowing. But why have two devices when you could have just one?

Feds, Arkansas sue Exxon over tar-sands spill

The Justice Department and the state of Arkansas want to make sure ExxonMobil pays up and cleans up after its pipeline spill in Mayflower, Ark.

Pipeline spills oil waste on more than 100 acres in Alberta

A five-year-old pipeline sprung a leak and spilled 2.5 million gallons of oily water, wiping out a wide swath of trees and vegetation -- and raising alarms yet again about pipeline safety.

Colorado city wants more than just a ban on fracking

Residents of Lafayette, Colo., are pushing a ballot initiative would prohibit all new oil and gas extraction and establish a far-reaching community bill of rights.

Five pest species now immune to GMO corn and cotton

Bt crops are genetically engineered to contain a pesticide, but pests are increasingly developing immunity and munching away, a new study finds.

Colorado is burning as climate change extends wildfire season

The head of the U.S. Forest Service recently warned Congress that climate change is prolonging the annual wildfire season. Colorado is feeling the heat.

Chevron CEO admits fracking raises “legitimate” safety concerns

Energy producers should adopt tougher standards to allay public concern, says Chevron boss John Watson. Of course, his own company doesn't have a great record on that front.

Bee-killing pesticide companies are pretending to save bees

Bayer and Syngenta, makers of neonicotinoid pesticides that are particularly threatening to bees, are touting their investments in bee health and research.

Yes Men prank the Chamber of Commerce — and get away with it

Four years ago, the Yes Men enraged the business group by impersonating it at a fake news conference supporting climate legislation. Now the chamber has finally dropped its lawsuit over the stunt.