Planet Earth Archive
14 January 2015, 10:04 PM ET
Aquifers are underground layers of rock that are saturated with water that can be brought to the surface through natural springs or by pumping.
14 January 2015, 03:53 PM ET
Researchers are tuning in to urban seismic noise, the man-made signals from human activity, to view geologic structures and track the rhythms of cities.
14 January 2015, 03:00 PM ET
NASA data shows that average sea ice totals have dropped significantly, with a precipitous fall between 2002 and 2008. Sea level rise is a direct result of sea ice loss.
13 January 2015, 11:44 PM ET
Lake Vostok is one of the largest subglacial lakes in the world. It may harbor unique types of organisms.
13 January 2015, 07:44 PM ET
Atmospheric CO2 levels have already passed the 400 ppm mark in 2015, and it's only January.
13 January 2015, 10:45 AM ET
Researchers are using drones to map the algae that grows on the underside of sea ice in the Antarctic.
13 January 2015, 06:54 AM ET
A small part of the San Andreas Fault thought to quietly slide without shaking its neighbors may be capable of magnitude-6 earthquakes, a new study finds.
13 January 2015, 03:07 AM ET
How much carbon is being released from the warming Arctic tundra?
13 January 2015, 02:33 AM ET
Scientists are racing against climate change to determine the impact of thawing Arctic soils and the carbon released during that process.
12 January 2015, 03:33 PM ET
The past year saw slightly fewer big earthquakes than the year before, but some areas unfamiliar with seismicity got the shakes, possibly due in part to oil drilling activities.
12 January 2015, 02:00 PM ET
As Arctic permafrost thaws due to rising global temperatures, soil microbes may speed up the rate at which they liberate carbon into the atmosphere.
11 January 2015, 01:53 PM ET
NASA's Earth Observatory released images of a swirling phytoplankton bloom off the coast of Alaska.
10 January 2015, 11:20 AM ET
Sports will further science this playoff season, as seismologists monitor the home stadium of the Seattle Seahawks during games in order to test a nascent earthquake early-warning system.
09 January 2015, 01:44 PM ET
Researchers in remote East Antarctica think a massive area of fractured ice discovered last month could be a newfound meteorite impact crater.
09 January 2015, 08:03 AM ET
The Soil Moisture Active Passive satellite, planned to launch on Jan. 29, will improve drought tracking in the United States and around the world.
09 January 2015, 07:38 AM ET
A leap second will be added to 2015 to keep atomic clock time in sync with Earth's actual rotational time.
08 January 2015, 08:37 PM ET
Groundwater is any freshwater that lies beneath the surface of the Earth.
08 January 2015, 05:20 PM ET
Sin City just got a little greener.
08 January 2015, 11:23 AM ET
A 2004 infrasound recording suggests a 'large body' likely hit the King Baudoin Ice Shelf in East Antarctica. On Dec. 20th, 2014, a circular structure was spotted on the ice shelf during surveys by the International Polar Foundation.
08 January 2015, 08:18 AM ET
Greenland is famous for its massive glaciers, but the region was relatively free of ice until about 2.7 million years ago, according to a new study. Before then, the Northern Hemisphere had been mostly ice-free for more than 500 million years.
08 January 2015, 01:22 AM ET
Straying from the trail, hikers can spread invasive species deep into the woods.
08 January 2015, 12:37 AM ET
Growing winegrapes may be the most backward form of horticulture that exists.
07 January 2015, 10:26 PM ET
The Mesozoic Era saw the rise of some of the most iconic animals, from Tyrannosaurus rex to birds and mammals.
07 January 2015, 10:13 PM ET
These long-lived, large windstorms are difficult to predict.
06 January 2015, 06:38 PM ET
Lake Erie's double ecological disasters may share a common ultimate cause, but they form under different conditions, a new study finds.
06 January 2015, 08:28 AM ET
An Italian warlord who suddenly dropped dead in 1329 was poisoned, a mummy autopsy reveals. Scientists found deadly traces of the toxic plant digitalis, or foxglove, in his system.
05 January 2015, 09:02 PM ET
The Japanese Meteorological Agency has released data showing 2014 was the globe's hottest year.
05 January 2015, 05:00 PM ET
A hydraulic fracturing, or fracking, well in Ohio triggered scores of small earthquakes in March 2014, including one large enough to be felt in nearby towns.
05 January 2015, 04:22 PM ET
It is a mystery why oxygen didn't suffuse the Earth's atmosphere until much after the earliest lifeforms that make oxygen arose. Now, new research suggests a reason for the delay.
05 January 2015, 06:48 AM ET
Two new U.S. research ships will take to the seas in the Arctic and Atlantic in 2015, allowing scientists around the world to explore the geology, biology and health of the oceans.
02 January 2015, 05:25 PM ET
The monarch butterfly, once common across the United States, could soon end up on the Endangered Species List.
02 January 2015, 12:34 PM ET
Scientists say the chance of every volcano erupting at once is so small that it's impossible, but what if it did happen? Would Earth as it now exists survive?