"As of January 1, 2015 single-hull oil tankers are no longer allowed in U.S. waters."

"The carcasses of thousands of small birds called Cassin's auklets have been washing ashore over the last few months from Northern California up to the north coast of Washington."

"There is more than one way to measure prescription drug use."

"A newborn orca in the endangered pod that frequents Puget Sound is an encouraging sign following the death earlier this month of a pregnant killer whale from the same group."

The expensive and disastrous failure of Shell's effort to begin offshore drilling in Arctic offshore waters of the Beaufort and Chukchi seas offers a tale of what can go wrong in such Arctic drilling.

Clean drinking water is something most U.S. residents take for granted -- until something goes wrong. And when something does go wrong, as it did in Charleston, W.V., this year, there are political consequences.

"This is the time of year when it's not uncommon to see big trucks barreling down highways and streets spreading road salt."

"The National Marine Fisheries Services has decided not to grant federal protection to the pinto abalone, a prized six-inch sea snail whose population has severely declined in Northern California."

"If approved by Gov. Christie, bill would give municipalities with aging pipes right to sell systems to private companies"

"LOS GATOS, Calif. — Three punishing years of drought have parched California streams, rivers and wetlands. One animal has the potential to restore these dry landscapes."