13 October 2014, 03:08 PM ET
Hawaii's Kilauea volcano has a history of phreatic eruptions, the same deadly blast that caught hikers at Japan's Mount Ontake volcano.
13 October 2014, 07:31 AM ET
New technology to detect volcanic ash that threatens airplanes could help prevent a repeat of the air traffic chaos that followed a 2010 volcanic eruption in Iceland.
12 October 2014, 03:01 PM ET
Glaciers in the mountainous Karakoram region of Asia are stable or expanding, even as glaciers in most of the rest of the world are melting. Now, new research reveals the geography and weather patterns behind this mystery.
12 October 2014, 01:00 PM ET
Iceberg marks found offshore Florida suggest future ice sheet melting may be more complex that previously thought.
10 October 2014, 03:59 PM ET
Cyclones have been quietly costing the world for decades, costs that could grow due to climate change.
09 October 2014, 05:12 PM ET
So much methane is leaking from drilling in the Southwest's Four Corners region that the natural gas blob can be spotted from space, a new study reports.
09 October 2014, 03:21 PM ET
El Niño still hasn't emerged, but forecasters give it a two-thirds chance of forming by the end of the year.
09 October 2014, 01:23 PM ET
Ancient tableware, lead anchors and a giant bronze spear have been recovered during an expedition to the 2,000-year-old Antikythera shipwreck in Greece. Marine archaeologists also found that the sunken ship could be bigger than expected.
09 October 2014, 07:12 AM ET
Frigid lakes bombarded by UV radiation and boiling, acidic springs are some of the otherworldly Earth environments where scientists plan to hunt for clues to life on Mars.
08 October 2014, 09:40 PM ET
The Mariana Trench reaches more than 7 miles below the surface of the Pacific Ocean.
07 October 2014, 03:52 PM ET
An enormous storm in the Western Pacific rapidly strengthened overnight into the most powerful super typhoon of 2014.
07 October 2014, 01:31 PM ET
Record lows in sea ice have been recently recorded in the Arctic but ice around the opposite pole of the planet is on the rise. This is probably not due to climate stabilization:
06 October 2014, 05:03 PM ET
Study finds the upper levels of the planet’s oceans have been warming much faster than previously realized.
06 October 2014, 02:38 PM ET
A deep-drilling project into one of the world's most dangerous earthquake faults kicked off Saturday (Oct. 4) on New Zealand's South Island.
06 October 2014, 11:07 AM ET
Many trees put on a show in fall, with their leaves turning hues of orange, yellow, red, purple and brown. But these changing colors can also serve as a marker to help identify trees.
06 October 2014, 09:55 AM ET
Whooping cranes raised by humans are turning out to be bad parents, and scientists are testing a new method to boost the birds' numbers in the wild.
06 October 2014, 07:34 AM ET
A run-of-the-mill volcanic eruption from Alaska's Mount Churchill spread ash from Canada to Germany 1,200 years ago.
02 October 2014, 02:17 PM ET
Earth's atmosphere wasn't always full of life-giving oxygen — it was once a choking mixture of carbon dioxide and other gases, more like the atmosphere of Mars or Venus.
02 October 2014, 02:00 PM ET
Scientists have created some of the most vivid maps yet of the deepest and most mysterious spots beneath the ocean, revealing spreading ridges and undersea mountains once veiled by sediments and ocean waters.
02 October 2014, 02:00 PM ET
A new gravity map of Earth's seafloor fills in blanks and will reveal its geologic history in greater detail.
02 October 2014, 10:47 AM ET
The moon's Ocean of Storms was previously thought to be a round crater left after a giant impact, but now researchers surprisingly find it is underlain by a giant rectangle created by cooling lunar lava as the moon formed.
02 October 2014, 07:41 AM ET
Evolution is often said to be "blind," because there's no outside force guiding natural selection. But changes in genetic material that occur at the molecular level are not entirely random, a new study suggests.
02 October 2014, 07:30 AM ET
In a series of arrests from August to September, police caught four people peddling the gills, snouts and other parts of rays, among other grisly animal products.
01 October 2014, 03:52 PM ET
Another Arctic milestone was reached this week when a cargo ship fortified against ice completed a solo trip through the hazardous Northwest Passage.
01 October 2014, 01:16 PM ET
Ice-penetrating radar has uncovered a previously unknown ice-covered trench, and other detailed terrain, in the bedrock hidden beneath two massive, bluish glaciers in Greenland and Antarctica.
01 October 2014, 01:00 PM ET
It's time to stop trying to keep global temperatures below 2 degrees Celsius above preindustrial averages, researchers argue. But not everyone is so quick to dismiss this prominent international goal.
01 October 2014, 12:26 PM ET
So much ice has disappeared from West Antarctica that Earth's gravity is weaker.
01 October 2014, 09:35 AM ET
In September, when Hurricane Edouard was churning out over the Atlantic Ocean, NASA dispatched its Global Hawk drones to fly directly over the eye of the storm.
01 October 2014, 08:43 AM ET
Areas contaminated with anthrax lure grazing animals like zebras, which could lead to new rounds of infections. Anthrax-infected carcasses might release more nutrients into the soil than other carcasses, making the sites attractive to grazers.
30 September 2014, 05:01 PM ET
The number of mammals, birds, reptiles, amphibians and fish on Earth dropped by 52 percent from 1970 to 2010, according to the World Wildlife Fund's newly released Living Planet Report.
30 September 2014, 03:35 PM ET
NASA's Global Hawk drone soared above the eye of Hurricane Eduoard over the Atlantic Ocean in September 2014.
30 September 2014, 03:29 PM ET
Fluctuations in gravity can be attributed to the loss of ice in West Antarctica according to data from ESA's GOCE satellite.