Once OPEC nations wielded price-shaping clout. But a US fracking boom, the return of Iran to world markets, and global urgency about carbon emissions changed the mind-set for OPEC titan Saudi Arabia.
A Yellowstone photographer recreated the first images ever of the region, which helped convince Congress to designate it as the world's first national park.
Up to 450 donkeys that roamed the island unchecked for nearly 40 years have already found adoptive homes.
New Mexico Attorney General Hector Balderas is seeking mine waste controls in the wake of the spill into the Animas River last year.
Flying above the East Antarctic Ice Sheet, researchers say the Totten Glacier has been unstable before, and it may be again soon.
A rescue team responded to reports of a humpback whale off the coast of Gloucester, Mass. on Wednesday, one of the thousands of whales entangled by fishing gear each year.
Last year's nest totals in Georgia and the Carolinas were record-setting for loggerhead sea turtles. So far, this year's numbers are looking good as well.
Conservationists are urging the Mexican and Chinese governments to take action to save the world's most endangered marine mammal, the vaquita porpoise.