08 December 2014, 06:01 PM ET
Natural temperature swings in the ocean, not global warming, are driving California's extreme drought, according to a new government study.
08 December 2014, 03:48 PM ET
The origin of life on Earth about 4 billion years ago remains one of the biggest unsolved mysteries of science, but a new study is shedding light on the matter.
08 December 2014, 07:02 AM ET
A gamma-ray burst, the most powerful kind of explosion known in the universe, may have triggered a mass extinction on Earth within the past billion years, researchers say.
05 December 2014, 04:59 PM ET
The 2012-2014 California drought is the worst to parch central and southern California in the past 1,200 years.
05 December 2014, 09:47 AM ET
California's rain shortfall isn't unprecedented, but its parched soils are. Researchers blame the heat.
05 December 2014, 06:09 AM ET
Yosemite Falls reappeared in full glory after two days of significant rain in the Sierra Nevada.
04 December 2014, 06:04 PM ET
Plate tectonics is the theory that Earth's outer shell is divided into several plates that glide over the mantle.
04 December 2014, 04:04 PM ET
Shallow ocean waters everywhere around Antarctica have warmed steadily for the past 40 years.
04 December 2014, 01:03 PM ET
04 December 2014, 06:58 AM ET
The most recent major ice age on Earth might have begun with the buildup of ice sheets in Antarctica, researchers say.
03 December 2014, 11:53 PM ET
Weather prediction may become financially self sustainable, but the hunt for climate data lags far behind.
03 December 2014, 10:13 PM ET
As the most profitable fast-food chain in the world, McDonald's has a responsibility to source its palm oil from responsible plantations.
03 December 2014, 02:41 PM ET
A new study shows how volcanoes cook up an eruption from the cold mush of crystals in their underground magma chambers.
03 December 2014, 07:12 AM ET
Scientists have lifted the lid off North America, sharpening their view of the mysterious structures underneath the United States.
03 December 2014, 07:05 AM ET
NASA's Earth Observatory released satellite images of ripplelike clouds that formed when air currents were interrupted by the tall peaks on Amsterdam Island.
02 December 2014, 09:39 PM ET
El Niño is a climate cycle in the Pacific Ocean with a global impact on weather patterns.
02 December 2014, 01:46 PM ET
Fossil fuel shares are no longer the "safe bet" they once were.
01 December 2014, 12:40 PM ET
Watch some of the earliest motion picture taken in the Arctic by explorers in the early 20th century, narrated by Peary-MacMillan Arctic Museum Curator Genevieve LeMoine.
29 November 2014, 09:28 AM ET
The mellow 2014 Atlantic hurricane season ends Sunday (Nov. 30), marking another year without major hurricanes hitting the Eastern United States.
27 November 2014, 02:00 PM ET
A rock from space is giving scientists the first natural sample of a mysterious mineral that has never been seen before.
27 November 2014, 06:07 AM ET
More than 8,000 shark teeth that date back millions of years have been found on Banks Island, in the Canadian Arctic.
27 November 2014, 02:11 AM ET
Women are taking a leadership role in the global effort to tackle climate change.
27 November 2014, 01:44 AM ET
November 2014 has been a month for the weather record books – but why?
26 November 2014, 01:52 PM ET
Using a 3,000 gallon wave flume, researchers are teasing out the subtle secrets of ocean aerosols.
26 November 2014, 01:32 PM ET
Scientists in California are bringing the ocean into the lab to learn the full impact of sea spray aerosols.
26 November 2014, 06:47 AM ET
Heralded by fiery lava fountains and plumes of poisonous gas, a new lava lake has appeared atop one of Africa's most active volcanoes.
25 November 2014, 11:39 AM ET
25 November 2014, 07:18 AM ET
From the space rock that killed the dinosaurs to the supervolcanoes that wiped out nearly 90 percent of the world's species, mass extinctions have occurred a handful of times throughout Earth's history. And if humans aren't careful, the planet may be due
24 November 2014, 05:07 PM ET
An underwater robot exploring the deep seas captured the first video footage ever of a creepy-looking anglerfish — a creature that looks so menacing it is sometimes called the "black seadevil."
24 November 2014, 05:03 PM ET
An underwater sub captured rare video footage of a deep-sea anglerfish in the waters of Monterey Bay, California.