30 December 2014, 02:52 PM ET
California and Nevada will feel an Arctic chill this week when wintry air from Canada arrives on New Year's Eve, possibly setting new record-cold temperatures as revelers ring in the New Year.
30 December 2014, 01:13 PM ET
Big climate news burbled out of the ocean in 2014. Most research findings were hot, but not pretty.
30 December 2014, 12:40 PM ET
A coyote hunter in Utah mistakenly shot and killed an endangered gray wolf, which wildlife groups worry was the same wolf photographed near the Grand Canyon this fall.
30 December 2014, 10:25 AM ET
Droughts in California may cause not only water shortages, but also conditions ripe for dangerous forest fires, landslides and poor water quality.
29 December 2014, 06:25 PM ET
The world's saltiest body of water, hidden away in a dry Antarctic valley, had its portrait taken earlier this year by a NASA satellite.
29 December 2014, 01:59 PM ET
The melting of Earth's polar ice came into starker relief in 2014, with real implications for sea level rise.
29 December 2014, 01:11 AM ET
Ten years ago we witnessed one of the worst natural disasters in history, when a huge earthquake off the coast of Sumatra triggered a devastating tsunami which swept across the Indian Ocean.
26 December 2014, 01:30 PM ET
The results of the most scientific study of cloud seeding done yet are in.
26 December 2014, 06:02 AM ET
As the 10th anniversary of the Indian Ocean tsunami approaches on Dec. 26, greatly expanded networks of seismic monitors and ocean buoys are on alert for the next killer wave.
24 December 2014, 12:43 PM ET
American suburbs light up during the holidays more brightly than inner cities, NASA found.
24 December 2014, 11:19 AM ET
Caltech professor Don Anderson died of cancer on Dec. 2, but he had the last word. Literally.
24 December 2014, 12:19 AM ET
It was our 14th expedition to the trenches of the Pacific Ocean, where depths can exceed 10,000m. And it was due to be our last for the foreseeable future.
23 December 2014, 12:12 PM ET
Find out the odds of a white Christmas for every location in the continental U.S., all on one map.
23 December 2014, 07:15 AM ET
Football, NASCAR and their rowdy, roaring crowds were pitted in a head-to-head battle this year to see which sport hits highest on the seismic charts.
22 December 2014, 09:23 PM ET
Since the late 1700s, the world's climate has been changing rapidly, mostly due to human causes.
22 December 2014, 06:57 AM ET
The "atmospheric rivers" that can bring torrential rains to Northern California will double in frequency by the year 2100 because of climate change, researchers say.
22 December 2014, 06:55 AM ET
Greenland's disappearing ice shifted gears in the past decade, switching from shrinking glaciers to surface melting, researchers reported at the American Geophysical Union's annual meeting.
19 December 2014, 11:20 AM ET
Near-Earth objects about the size of the Chelyabinsk meteor shower could potentially be detected by their interaction with solar wind as they travel through space.
19 December 2014, 10:24 AM ET
Boulders the size of stretch limousines were moved by storm waves during Super Typhoon Haiyan.
18 December 2014, 04:57 PM ET
NASA scientists unveiled the first data sets from the Orbiting Carbon Observatory-2, or OCO-2.
18 December 2014, 02:26 PM ET
Despite a high human population density, Europe is seeing a resurgence of large carnivores such as wolves, lynx, bears and wolverines.
18 December 2014, 11:48 AM ET
The permafrost in most of Alaska's national parks could disappear by the year 2100, new research suggests.
18 December 2014, 07:23 AM ET
This is the time of year when hanging mistletoe beckons loving couples to share a romantic moment. But, in the desert regions of northern Mexico and in the American Southwest, a very different type of mistletoe can be found.
17 December 2014, 11:15 PM ET
The consequences of global warming are expected to be far-reaching, long-lasting and, in many cases, devastating.
17 December 2014, 10:39 PM ET
About 300 million years ago, all the seven continents formed one massive supercontinent called Pangaea.
17 December 2014, 06:05 PM ET
New York City and its power grid is among the cities most sensitive to increasing hurricane intensity.
17 December 2014, 04:38 PM ET
Bad news for polar bears: the Arctic is still warming at twice the pace as the rest of the planet, according to a new federal report.
17 December 2014, 04:15 PM ET
The fossil of a bizarre marine reptile from the age of dinosaurs recently unearthed in China holds clues to how life recovered after the greatest mass extinction in Earth's history, researchers say.
17 December 2014, 03:12 PM ET
A remote-controlled underwater robot has collected the most detailed information yet about the underbelly of stable Arctic sea ice.
17 December 2014, 01:12 PM ET
Volcanoes punched through a remote part of the West Antarctic ice sheet twice in the last 50,000 years.
17 December 2014, 09:28 AM ET
Life didn't immediately rebound after the world's greatest extinction, but cropped up in fits and starts.
16 December 2014, 11:59 PM ET
Researchers are busy building the scaffolding for next-generation chemistry.