Yes, that's a first for the Colorado capital since record-keeping began.
New rules instated after the Flint water crisis were heralded as the nation’s strictest, but lax enforcement and testing gaps mean all is not as it seems.
The calf appeared to be left for dead in Kenya's Masai Mara.
We’ve heard these claims before. But the mounting scale of the climate and energy conundrum is fueling more money and favorable policies into atomic power.
A new study found that warmer sea temperatures may be driving albatross breeding pairs to split up at higher rates.
But its recommendation stopped short of the outright ban pushed by environmental groups.
Oil companies purchased new rights to drill on top of a 1970s dumping ground, where thousands of barrels of chemical waste litter the ocean floor.
The court overruled a voter-passed amendment to the state constitution that would have legalized recreational marijuana use.
Born a stray in a backyard in Turkey, Midas' charming personality and unique look have won her worldwide fans.
The Space Agency hopes to establish a sun-independent power source for missions to the moon by the end of the decade.
Sequoia National Park says lightning-sparked wildfires in the past two years have killed a minimum of nearly 10,000 giant sequoia trees in California.
"Our nation’s lands and waters should be places to celebrate the outdoors ... not to perpetuate the legacies of oppression," said the interior secretary.
About 3 in 4 survey respondents believe global warming is happening, and more than half agree that we are being harmed by climate change “right now.”
The Interior Department's Ben Cassidy had direct contact with former NRA colleagues and helped install gun advocates on two advisory councils.
An internal fight over John Muir’s racial views, and what to do about them, has roiled the Club’s board and led to the sanctioning of two members.
Officials plan to milk the massive funnel-web spider for venom and send it to a pharmaceutical company that can turn it into antivenom.
Wednesday's offshore lease sale was the biggest ever of its kind — including those conducted during the Trump administration.
It was hard to bear, but the bear was able to drink and eat.
The bird spent four days in the storage area of a moving van from Las Vegas to Westbrook, Maine.
The administration proposed a 20-year moratorium on new fossil fuel leasing within 10 miles of Chaco Canyon, an area rich in Native American cultural sites.