Daryl Hannah: The star of "Splash" and the "Kill Bill" movies was arrested outside the White House in an oil pipeline protest. Daryl Hannah is a longtime environmentalist who has previously been arrested for green causes.
Labor Day weekend: Damage from hurricane Irene has closed popular recreation areas such as parts of the White Mountains National Forest in New Hampshire.
Virginia quake: Minimal damage and, for many, imperceptible shaking were the sources of many a Facebook and Twitter joke.
A study finds that a fishing ban at a Mexican marine park – with critical help from local residents – has successfully restored the fish population. Whether it's enough to restore the industry is not clear.
The failure of a recent expedition to find any invasive Asian carp near Lake Michigan – though DNA traces say they are there – has shipping interests claiming victory and others calling foul.
Federal officials start the four-day expedition Monday. Its aim is to determine whether the Asian carp has infiltrated water locks that are designed to keep the species out of Lake Michigan.
Automakers must improve their mileage every year, up to a fleet-wide average of 54.5 mpg in 14 years. Green groups praise the new regulations, while opponents call them job-killers.
Worldwide, forests absorb almost 9 billion tons of the greenhouse gas carbon dioxide every year, according to a new study published Thursday in the journal Science.
Electric cars have been getting more attention as power-saving becomes a the new buzzword in Japan.
Many scientists suggest that climate changes could be causing certain kinds of wildfires for which the West's forests are not well adapted. This year could help researchers better understand and fight the trend.
The finding, in a new study by the Scripps Institution of Oceanography, could have implications for the food chain. The region of floating trash in the Pacific Ocean is double the size of Texas.
Giant hogweed - known to cause blisters, blindness, and scars that last for years - is cropping up in New York.
Per-capita water use has declined in 100 communities that depend on the Colorado River, the primary source of freshwater to much of the southwest. But as populations expand, overall water consumption is still climbing.
A 20-year ban on new uranium mining, covering 1 million acres near the Grand Canyon, is the likely outcome of a two-year-plus review process, Interior Secretary Ken Salazar announced Monday.
A $2 billion restoration effort may help rehabilitate Lake Michigan and the other Great Lakes, but environmentalists say it may be too late to reverse four centuries' worth of damage.
Many studies have documented the West's declining snowpack. But a new one, published Friday in the journal Science, covers the length of the Rockies over an 800-year period.
Even as the Wallow fire threatens to alter the Arizona landscape for a long time to come, some scientists say climate change may be fueling a trend toward larger wildfires in the American West.
'Medo' is an abandoned baby brown bruin rescued by a family in Slovenia. Now they want to keep him, much to the chagrin of local animal experts.
A controversial oil-sands pipeline operated by a Canadian oil company was ordered shut down Friday on charges that its continued operation would be hazardous to lives and the environment.
A UN agency reports that as the global economy began to recover from the recession, carbon emissions surged to a new record, imperiling measures to contain global warming.