Planet Earth Archive
17 October 2014, 01:20 PM ET
Earth's magnetic field could flip within the next 100 years, a new study suggests.
17 October 2014, 12:30 PM ET
Earthquake science has kept pace with San Francisco's tremendous transformation since the 1989 Loma Prieta earthquake.
17 October 2014, 08:20 AM ET
Oct. 17 marks the 25th anniversary of the 1989 Loma Prieta earthquake. The animation shows earthquake waves speed away from the epicenter in the Santa Cruz Mountains south of San Francisco, California.
16 October 2014, 02:00 PM ET
Tornadoes are touching down in clusters more often than 50 years ago.
16 October 2014, 01:34 PM ET
Don't expect the polar vortex to pummel the eastern United States this winter.
15 October 2014, 12:14 PM ET
The catastrophic 1934 drought is one of the worst North America droughts on record, and was caused, in part, by an atmospheric condition that may have led to the current drought in California, a new study finds.
15 October 2014, 07:27 AM ET
The U.S. Department of Defense released a new report Oct. 13 that says climate change poses an "immediate risk to national security." The so-called road map is designed to help the military navigate and prepare for increasing global temperatures.
14 October 2014, 05:00 PM ET
Another rare case of fracking-caused earthquakes has jolted Ohio.
14 October 2014, 04:01 PM ET
A NASA mission is measuring biofuel emissions and contrail formation by flying jets directly behind a large aircraft.
14 October 2014, 11:06 AM ET
Rocks found in the deep ocean near methane vents are teeming with microscopic life, new research finds. Microbes live in (and build) these rocks, surviving on the greenhouse gas methane seeping from below the ocean floor.
13 October 2014, 05:00 PM ET
Four San Francisco Bay Area faults have built up enough seismic strain to unleash destructive earthquakes.
13 October 2014, 04:39 PM ET
September 2014 was the warmest September since 1880, update NASA data shows.
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.