American shad are struggling with little success to make a comeback in Virginia's James River. Historically abundant, this "founding fish" disappeared for years because its spawning was blocked by dams.

The economic stimulus will bring another $2 billion in cleanup funds to the Hanford nuclear reservation in Washington state.

The earth's species may be facing a sixth major mass extinction that could take millions of years to recover from, Elizabeth Kolbert reports in The New Yorker.

Two key House leaders have introduced a bill that would drastically overhaul and tighten the nation's food safety system.

Environmental groups seem to like President Obama's pick for the Supreme Court, Sonia Sotomayor.

Private well water should be tested yearly, two major scientific bodies say -- sometimes more often when kids are drinking it.

"Global energy demand is expected to soar 44 percent over the next two decades with most of the demand coming from developing countries such as China and Russia, the U.S. government's top energy forecasting agency said on Wednesday."

A draft bill from the House Natural Resources Committee would drastically reform the Interior Department's corruption-plagued system for collecting oil and gas royalties.

Scientists from the National Center for Atmospheric Research say melting Greenland ice sheets could raise sea levels more in the northeaster US and Maritime Canada because of a change in ocean currents.

"China is ready to strengthen its cooperation with the United States to combat climate change, Premier Wen Jiabao told US House Speaker Nancy Pelosi on Wednesday, state media reported."