13 February 2015, 12:30 PM ET
DNA tests have confirmed that an endangered gray wolf killed in Utah in December was the same lone wolf that had been spotted and photographed near Arizona's Grand Canyon, the U.S. Fish and Wildlife Service announced this week.
13 February 2015, 08:32 AM ET
Milky white rain poured down on eastern Washington state and northeast Oregon on a wintery morning last week.
13 February 2015, 12:13 AM ET
More schools are divesting from fossil fuels, a trend that appears to be accelerating.
12 February 2015, 05:26 PM ET
Megadroughts are droughts that last for more than 10 years. A new study finds that megadroughts are likely to strike the Southwest and Central Plains between 2050 and 2100.
12 February 2015, 02:00 PM ET
Scientists study ancient trees to learn about past droughts.
12 February 2015, 02:00 PM ET
Before this century ends, the Southwest and Central Plains states could shrivel under decades-long megadroughts worse than those that ended the Ancestral Pueblo civilization millennia ago.
12 February 2015, 12:53 PM ET
Extreme architecture for extreme environments.
12 February 2015, 07:02 AM ET
Two new studies explain why some regions of the country are rattling more than others as oil and gas production rises.
11 February 2015, 04:37 PM ET
The polar vortex is sending cold air to the East again. Research continues into role warming might play.
11 February 2015, 03:32 PM ET
Lower ocean pH levels are impairing coral skeleton growth, making it easier for mollusks, worms and sponges to do some serious damage.
11 February 2015, 01:00 PM ET
A massive outpouring of carbon dioxide from the deep ocean helped end the last ice age, scientists report today.
10 February 2015, 07:36 PM ET
A greenhouse gas is any gaseous compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere.
10 February 2015, 05:20 PM ET
Scientists at NYU are using lollipops to help understand how materials dissolve. "Flowing fluids generate unique shapes through erosion or dissolution," according to NYU assistant professor Leif Ristroph.
10 February 2015, 03:59 PM ET
Geoengineering offers solutions and risks but reducing emissions is still the best way to address climate change.
10 February 2015, 02:05 PM ET
Millions of years before LSD and rock and roll, dinosaurs munched on psychedelic fungus, a new study suggests.
10 February 2015, 08:30 AM ET
The eruption of volcanoes buried beneath Iceland's glacier may have triggered a series of megafloods that carved a giant canyon in a period of days, new research suggests.
10 February 2015, 07:25 AM ET
Iceland is rising at a faster pace as global warming melts the island's ice caps, scientists say.
09 February 2015, 03:00 PM ET
Traces of air pollution from 16th-century Spanish silver mines were discovered deep inside an ice cap in the Peruvian Andes.
09 February 2015, 01:19 PM ET
Floods have become more frequent in the central United States in the past 50 years, a new study finds.
09 February 2015, 12:52 PM ET
Evidence provided by pulverized rocks offers the most comprehensive view yet of Alamo crater, the most accessible impact crater in North America.
07 February 2015, 08:43 AM ET
While the tornado total will climb by 2100, the number of tornadoes will also swing wildly from year to year.
07 February 2015, 08:42 AM ET
Killer shrimp, creatures that indiscriminately slay other animals without eating them, may soon join the list of invasive species living in the Great Lakes, a new study finds.
06 February 2015, 04:12 PM ET
The Withings Activité Pop is a fitness tracker for people who don't want to look like they're wearing a fitness tracker.
06 February 2015, 02:56 PM ET
Scientists found some weird little organisms in the NYC subway system, from traces of pathogens like the plague and anthrax, to marine microbes thought to be native to Antarctica, and, perhaps unsurprisingly, bacteria from mozzarella cheese.
05 February 2015, 02:41 PM ET
Iceberg calving events have distinctive sounds that could help scientists pinpoint how much ice is vanishing and contributing to sea level rise.
05 February 2015, 02:00 PM ET
The rise and fall of sea level during the past million years matches up with valleys and ridges on the seafloor, suggesting a link between underwater eruptions and ice ages, two new studies find.
05 February 2015, 01:51 PM ET
Scientists, researching ways to detect glacial ice loss, have discovered that distinct "rumbles, snaps and splashes" occur during ice loss, or calving events. This could lead to inexpensive ways to monitors glaciers.
04 February 2015, 09:26 PM ET
Continental drift was a theory that explained how continents shift position on Earth's surface.
04 February 2015, 03:37 PM ET
A storm arriving in Northern California Thursday will be one of the most closely watched atmospheric rivers in history, as scientists plan to study the weather pattern from the ocean, in the air and on land.
04 February 2015, 03:34 PM ET
Stunning footage of a man descending to the rim of a bubbling lava lake was captured using tiny recreational drones.
04 February 2015, 01:00 PM ET
The bottom of the Pacific plate under New Zealand has been visualized in fine detail using reflected sound waves.
04 February 2015, 10:01 AM ET
The world's biggest gold deposit may have been formed through the action of ancient volcanic flows and primitive microbes.