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.
Deconstruction of a home to reuse or resell its materials is gaining popularity as a more environment-friendly alternative to demolition. Sometimes it even saves money.
Habitat destruction drives species extinct more slowly than previously thought, according to a new model described in this week's Nature. 'We have bought a little time for saving species,' says scientist.
As the developing world becomes more middle class, will traditional frugality trump the pollution that goes along with more consumption?
A Duke University study finds high methane levels in ground water near where fracking, or hydraulic fracturing, has occurred. Fracking is a controversial practice to extract natural gas from shale.
A lot of people have opinions about climate change, but do they really know what they are talking about? Test your knowledge with this quiz.