A BioBlitz is a kind of whirlwind count of all the species in a specific place. The Park Service has been co-sponsoring BioBlitzes with National Geographic.
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 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.
"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.