07 November 2014, 07:37 AM ET
Take a look at images of a 39,000-year-old woolly mammoth with a preserved brain discovered in the Siberian permafrost.
07 November 2014, 12:15 AM ET
The American chestnut tree was practically wiped out from the eastern United States 100 years ago by a deadly fungus, but now, thanks to a tweaked gene, researchers are growing trees that appear to be resistant.
06 November 2014, 03:46 PM ET
El Niño conditions continue to sputter in the tropical Pacific Ocean, pushing back the odds of even a weak El Niño emerging this winter, forecasters said today (Nov. 6).
06 November 2014, 01:57 PM ET
An orphaned sea otter pup, just a week old and underweight, was rescued from a beach in California last month. Now, the camera-friendly creature is starting over in the Midwest, with 24-hour care at Chicago's Shedd Aquarium.
05 November 2014, 06:37 PM ET
Small islands boost the power of tsunami waves, rather than absorbing their impact, a new study shows.
05 November 2014, 09:25 AM ET
Rovers — especially cute ones that are disguised as penguin chicks — seem to be better at spying on penguins than humans are.
04 November 2014, 07:01 PM ET
Scientists reveal they can monitor "uncontacted tribes" in the Amazon rainforest using satellites, which would allow safe, inexpensive and noninvasive tracking of these tribes in order to protect them from outside threats.
04 November 2014, 02:37 PM ET
There's still time to hit the peak for colorful fall leaves, and a new foliage forecast map can help people plan their viewing trips more than a week ahead.
04 November 2014, 06:54 AM ET
Two huge blobs of dense rock jammed deep beneath Chile's coastline acted like seismic speed bumps during the magnitude-8.8 Maule earthquake in 2010, according to a new study.
03 November 2014, 05:32 PM ET
The wreck of a 17th-century Dutch warship has been discovered off the coast of Tobago. Marine archaeologists believe the vessel is possibly Huis de Kreuningen, which was lost during a bloody fight between Dutch and French colonists.
03 November 2014, 11:50 AM ET
A rare mineral known from just three massive meteorite impacts has now turned up in a Wisconsin crater.
31 October 2014, 02:26 PM ET
A wayward gray wolf has been spotted several times this month around the North Rim of Grand Canyon National Park. It could be the first of its species to roam Arizona in 70 years.
31 October 2014, 01:55 PM ET
The Earth will never catch up to the moon (let's hope), but the number of Ordovician craters may soon takeoff. That's because it's easier and cheaper than ever to sniff out the shocked minerals that confirm an impact.
31 October 2014, 01:16 PM ET
Just in time for Halloween, a spooky set of thunderstorms passed over the Eastern Pacific Ocean today.
30 October 2014, 04:39 PM ET
The most catastrophic volcanic eruption in the last 2 million years may owe its superpower to stacks of hot molten rock layered like jelly filling inside a sky-high wedding cake.
30 October 2014, 02:08 PM ET
A deadly new fungal disease that originated in Asia is killing salamanders and newts in Europe and could soon land on U.S. shores, home to the most diverse population of salamanders worldwide.
30 October 2014, 11:59 AM ET
The biggest underwater sculpture ever built was placed under the waters off Nassau in the Bahamas.
30 October 2014, 10:05 AM ET
Hurricane Gonzalo hit Bermuda earlier this month, stirring up miles of calcium carbonate sediment that forms the foundation of the island.
30 October 2014, 07:43 AM ET
Huge stone circles discovered by air in the Middle East have been imaged with high resolution, revealing their age and other intriguing details. Here's a look at the "Big Circles," which have puzzled scientists for decades.
29 October 2014, 06:04 PM ET
The hunt for Amelia Earhart's lost plane will continue next summer. A team will investigate an underwater "anomaly" detected off the coast of the tiny Pacific atoll Nikumaroro. The group thinks it could be the wreckage of Earhart's aircraft.
29 October 2014, 04:50 PM ET
Weeks of grim waiting ended yesterday (Oct. 28) for two homeowners in Hawaii's Pahoa village, as they became the first to lose their yards and fences to the relentless river of lava from Kilauea volcano.
29 October 2014, 02:22 PM ET
The frankenstorm has spurred an unprecedented amount of research to tackle the questions about the role climate change may have played in worsening the storm, how global warming might affect similar storms, and why Sandy caused so much damage.
28 October 2014, 09:58 PM ET
Properties, sources and uses of the element chlorine.
28 October 2014, 03:09 PM ET
Mammoth bones more than 70,000 years old emerged from the eroded river banks of a reservoir in Idaho this month. Paleontologists and students raced to rescue part of the beast's skull and a tusk, but they suspect more lies below the surface.
28 October 2014, 02:58 PM ET
A mammoth skeleton was discovered this month on the banks of a reservoir in Idaho. Paleontologists have rescued part of its skull and a tusk, but there could be a lot more buried below the surface.
28 October 2014, 11:29 AM ET
China is taking initial steps to control emissions from ports and shipping — an important new flank in that nation's war on pollution.
28 October 2014, 09:55 AM ET
A significant chunk of the missing oil from 2010's Deepwater Horizon oil spill has been discovered sitting on the seafloor at the bottom of the Gulf of Mexico.
28 October 2014, 01:27 AM ET
Reef historian Iain McCalman, in Sydney, and reef scientist Stephen Palumbi, in California, are monitoring reef degradation from opposite sides of the planet. They compared notes.
27 October 2014, 12:49 PM ET
Hawaii's Kilauea volcano has been erupting for more than 30 years. A new stream of lava started flowing on June 27, 2014. By the fall, the molten rock was pushing close to homes and buildings in the town of Pahoa on Hawaii's Big Island.
27 October 2014, 11:45 AM ET
An oozing lava flow from Hawaii's Kilauea volcano picked up speed over the weekend as it crept toward Pahoa, prompting local authorities and residents to prepare for possible evacuations on the Big Island.
27 October 2014, 06:17 AM ET
The aurora borealis can make for a spectacular night sky show, even sometimes visible from space. Here are eight amazing facts about the northern lights.
26 October 2014, 06:40 PM ET
Most people will have heard of plate tectonics: moving pieces on the surface of the planet that collide, pull away or slide past one another over millions of years to shape our world, but new information points to a more complex process.