Planet Earth Archive
25 January 2015, 08:33 PM ET
As human activity alters the balance of nutrient cycles in nature, one mathematical biologist seeks answers to questions about how phosphorous pollution affects our lakes.
25 January 2015, 01:09 PM ET
Marine ecologist Paul Sikkel discusses his passion for and work with coral reefs and the parasites that live there.
24 January 2015, 06:23 PM ET
Caroline Farrior uses math to understand the old plants play in the global carbon cycle so scientists will be able to predict the path of climate change.
23 January 2015, 07:25 PM ET
Marine ecologist Paul Sikkel explains why corals are important and how marine life thrives in protected areas.
23 January 2015, 04:29 PM ET
Hydraulic fracturing, commonly called fracking, is a drilling technique used for extracting oil or natural gas from deep underground.
23 January 2015, 12:10 PM ET
A mysterious crater discovered in East Antarctica last month likely formed beneath a meltwater lake, not because of a meteorite impact, researchers now think.
23 January 2015, 09:57 AM ET
The Yampa River — one of the few undiverted, largely natural rivers in the West — gets the Google Street View treatment in a new conservation effort.
23 January 2015, 09:42 AM ET
Google Maps users can now take a virtual raft trip down Colorado's Yampa River with a new Google Street View treatment of the river, created in partnership with the nonprofit American Rivers.
22 January 2015, 04:50 PM ET
Researchers were startled to find fish, crustaceans and jellyfish hidden beneath the Ross Ice Shelf, in one of the world's most extreme ecosystems.
22 January 2015, 04:47 PM ET
Photos of fish, amphipods and other creatures living under Antarctica's Ross Ice Shelf.
22 January 2015, 07:07 AM ET
Ever wondered why the smell of fresh rain is so evocative? Using high-speed cameras, scientists have now identified the physical mechanism behind it.
21 January 2015, 05:12 PM ET
The discovery of two lakes hidden beneath the Greenland ice suggests that climate change cuts to the bottom of the ice sheet.
21 January 2015, 01:41 PM ET
"It’s a result of human-induced global warming,” says NASA Goddard Space Flight Center's Steven Pawson referring to recently released data. Pawson notes how the cold East Coast winter and El Nino event had little effect on the rising temps.
21 January 2015, 12:38 PM ET
The ominous hands of the Doomsday Clock have been fixed at 5 minutes to midnight for the past three years. But they could move tomorrow.
21 January 2015, 11:55 AM ET
Melting glaciers pose another threat beyond sea level rise. They will dump massive amounts of organic carbon into the world's oceans, altering ecosystems.
21 January 2015, 07:02 AM ET
The massive Heart Mountain landslide in Wyoming raced to its final resting place on a cushion of carbon dioxide gas, similar to a hovercraft gliding on air, a new study suggests.
20 January 2015, 10:49 AM ET
Two new maps available for free download considerably improve estimates of land dedicated to agriculture, and provide the first global overview of field sizes.
16 January 2015, 11:24 AM ET
Believed to be caused by increasing human contribution of carbon dioxide and heat-trapping gases, the steady increase in average temperatures peaked yet again in 2014. Since 2000, the record for warmest year has been broken 10 times.
16 January 2015, 11:10 AM ET
Global temperatures in 2014 shattered earlier records, making 2014 the hottest year since 1880.
16 January 2015, 12:42 AM ET
Today (Jan. 16), climate scientists are expected to announce that global temperatures in 2014 shattered earlier records, making 2014 the hottest year since 1880.
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.