Planet Earth Archive
01 May 2015, 11:51 AM ET
Scientists are striving to learn from the latest volcanic eruption in Chile.
01 May 2015, 11:46 AM ET
The Nasca Lines, a series of strange etchings in the barren Peruvian desert, may have been viewed on ritual processionals to an ancient temple.
01 May 2015, 09:57 AM ET
It's possible that thousands of ivory objects — from kitschy trinkets to carved tusks — worth more than $15 million are being traded each year on Craigslist in the United States, according to a new report.
01 May 2015, 06:54 AM ET
Measuring a mountain relies on an incredibly tedious, and relatively low-tech series of trigonometric equations.
30 April 2015, 04:20 PM ET
A new study finds that the biggest aftershocks tend to strike at the edge of the original earthquake.
30 April 2015, 08:08 AM ET
Researchers detected a vertical lift of about 3 feet of a broad swath of ground near Kathmandu linked to the Nepal earthquake. Here are the radar images showing the quake's effects.
29 April 2015, 10:13 PM ET
The first good satellite view of Nepal's deadly earthquake could explain why damage in the city was so severe.
29 April 2015, 04:51 PM ET
For the first time in more than 30 years, lava is flowing on the floor of Halema'uma'u crater in Hawaii.
29 April 2015, 03:21 PM ET
An emerging body of research shows that greenhouse gases are billowing out of the state’s woodlands.
29 April 2015, 01:16 PM ET
At about 10:20 am Hawaii time on April 28, a rockfall sloughing off the wall of Halema'uma'u Crater hit the molten lava beneath, triggering an explosion of magma fragments.
29 April 2015, 12:12 PM ET
The Coast Guard usually tries to find ships before they sink. But during a recent patrol over Lake Michigan, an aircrew spotted several historic wrecks in the clear waters.
29 April 2015, 11:56 AM ET
After an icy winter, springtime brought crystal clear waters to Lake Michigan. An aircrew with the Coast Guard spotted several shipwrecks during a routine patrol this month.
28 April 2015, 06:21 PM ET
The roiling lava lake atop Hawaii's Kilauea volcano is threatening to overflow for the first time since the molten pool appeared in 2010.
28 April 2015, 04:22 PM ET
An airborne research team, supported by the NSF, scanned the McMurdo Dry Valleys revealing "salt aquifers” beneath the glaciers, lakes and frozen soils. Microbial life could thrive there, retaining evidence of ancient climate change.
28 April 2015, 03:41 PM ET
Photos of the lava lake in Kilauea volcano's Halemau'mau' crater, which is close to overflowing.
28 April 2015, 02:51 PM ET
Underneath Antarctica's Dry Valleys lies a vast and ancient network of salty, liquid water filled with life, a new study finds.
28 April 2015, 10:56 AM ET
The massive earthquake that killed more than 5,000 people in Nepal over the weekend also left dozens of historic buildings in ruins.
28 April 2015, 10:10 AM ET
Indian Ocean tsunamis destroyed one of the world's most important silk-route ports in the 15th century, new research finds.
27 April 2015, 07:32 PM ET
Nepal still faces more deadly earthquakes in the near future, even after the magnitude-7.8 temblor that killed more than 3,000 people on Saturday.
27 April 2015, 09:27 AM ET
As Pope Francis prepares a historic document to make environmental issues a priority for Catholics, a group of climate-change deniers is trying to convince the pontiff this week that global warming is nothing to worry about.
27 April 2015, 08:54 AM ET
Terrible as Saturday's earthquake was in Kathmandu, geologists fear more bad news to come as information filters in from the surrounding mountainous countryside which has been cut off from the world by the disaster.
27 April 2015, 06:59 AM ET
Landslides coming off Catalina Island's steep slopes could send tsunamis racing toward popular Los Angeles and Orange County beaches.
26 April 2015, 08:56 AM ET
When the cacti found in the deserts of North American begin to bloom in late March and April, spring has once again returned to these arid lands.
24 April 2015, 04:20 PM ET
Peering into the planet's tiniest ecosystems, under rocks and in our guts.
24 April 2015, 12:57 PM ET
A United Nations study shows that the United States ranks 15th in happiness.
24 April 2015, 06:54 AM ET
Earthquakes threaten roughly half the U.S. population, or more than 143 million people, a new study finds. That number rises when Hawaii, Alaska and Puerto Rico are included.
23 April 2015, 02:02 PM ET
A giant blob-shaped reservoir of searing hot rock has been discovered far below the supervolcano underneath Yellowstone National Park, one that could fill the Grand Canyon more than 11 times over.
23 April 2015, 01:03 PM ET
An NSF funded team of University of Utah seismologists has discovered a reservoir of hot, partly molten rock hidden 12-28 miles beneath ellowstone’s supervolcano. The magma could fill the 1000 cubic-mile-Grand Canyon more than 11 times.
23 April 2015, 10:22 AM ET
New earthquake hazard maps released today highlight 17 hotspots where communities face a significantly higher risk of earthquakes.
23 April 2015, 08:12 AM ET
Geologists have finally found the source of an 1872 earthquake that rattled windows from Washington state to Montana.
22 April 2015, 07:02 PM ET
While trash bags floating down streams still cause environmental headaches, packaging has not become the landfill headache Americans once feared.
22 April 2015, 06:32 PM ET
Shattered cave formations in the central and eastern United States preserve one of the longest records of powerful earthquakes in these regions.