16 July 2014, 02:00 PM ET
The Indus River dolphin range has declined dramatically as a result of dams that have fragmented their native habitat, new research finds.
16 July 2014, 01:00 PM ET
At Mount Rainier and Mount St. Helens, scientists are tracking magma's underground path to better understand how volcanoes works.
16 July 2014, 11:20 AM ET
January-June 2014 was the warmest first half to a year ever in California, helping fuel the state's drought.
16 July 2014, 07:26 AM ET
A new global survey of human development finds people have settled more of the Earth than previously estimated.
16 July 2014, 07:21 AM ET
New radar imagery shows human impacts on Earth, including sprawling urban cities and rural landscapes.
15 July 2014, 05:29 PM ET
A NASA instrument designed to study the oceans turns out to be useful for studying land, too. The Aquarius instrument reveals levels of moisture in soil around the globe.
15 July 2014, 01:06 AM ET
When it takes over ecosystems, this invader causes soils to surrender their carbon and release it as greenhouse gas.
14 July 2014, 05:26 PM ET
The cold front sweeping across the United States is not technically a polar vortex, but it will bring significantly lower temperatures.
14 July 2014, 08:25 AM ET
The favor of a political leader can be seen from space, with nighttime lights increasing in regions of politically corrupt countries that see a hometown hero taking national power.
11 July 2014, 04:28 PM ET
New Yorkers may be treated to a stunning sunset tonight (July 11), with the return of a phenomenon known as "Manhattanhenge," which occurs when the setting sun aligns with Manhattan's grid of streets.
11 July 2014, 02:09 PM ET
Yellowstone National Park closed a popular road Thursday (July 10) after geothermal heat cooked the asphalt.
10 July 2014, 05:01 PM ET
Toxic green mats of slimy blue-green algae will again threaten the western shores of Lake Erie later this summer.
10 July 2014, 02:00 PM ET
One of the world's deepest earthquakes was also a rare supersonic quake, upending ideas about where these unusual earthquakes strike.
10 July 2014, 12:47 PM ET
The bacteria in the oceans seem to tightly sync their metabolisms to the day-night cycle, which may allow them to survive in the nutrient-poor environment of the ocean, new research suggests.
10 July 2014, 10:48 AM ET
A new snapshot of U.S. methane emissions in 2004 found 40 percent higher methane levels from livestock than had been estimated by the Environmental Protection Agency.
09 July 2014, 05:25 PM ET
A Northern anchovy school was the largest group of anchovies ever seen offshore of La Jolla in the last 30 years.
09 July 2014, 03:11 PM ET
Two satellite images show how the Brazilian city of Sao Paulo has grown over two decades, with spreading suburbs and new ring roads.
09 July 2014, 12:48 PM ET
A new study blames the "long tail" for mass extinction of the amazing sea creatures called ammonites.
09 July 2014, 11:35 AM ET
Models show summers are going to keep warming as emissions continue. See what this will warming feel like.
08 July 2014, 02:45 PM ET
A new world-record UV index was measured in 2003 at Bolivia's Licancabur volcano.
08 July 2014, 12:01 PM ET
The huge swirling storm was captured from space by a NASA satellite on July 7, as it churned toward Okinawa.
08 July 2014, 11:29 AM ET
New data from the ESA's Swarm satellite array shows that Earth's magnetic field is weakening, but don't worry, doomsday is not in the forecast.
08 July 2014, 10:22 AM ET
Global cooling caused by some historic volcanic eruptions wasn't as extreme as climate scientists recently thought, according to newly revised ice core records from Antarctica.
08 July 2014, 09:24 AM ET
A "world-class" dinosaur track site discovered within Denali National Park shows herds of duck-billed dinosaurs once tramped through muddy rivers in family groups.
08 July 2014, 08:32 AM ET
Surges of gas-charged fluid may have explosively generated the earthquakes preceding a giant sinkhole in Louisiana, researchers say. The findings may help scientists understand how pressurized fluids trigger earthquakes.
07 July 2014, 04:23 PM ET
The berg winds of southern Africa are seen blowing plumes of dust off the Namibian coast in a new astronaut image. These hot, dry winds originate from inland mountains and blow dust toward the sea.
07 July 2014, 03:37 PM ET
Humans were building in the Amazon before the rainforest existed, according to a new study of the ancient ecology of northeastern Bolivia. Mysterious earthen ditches were made when the region was a savanna.
07 July 2014, 03:15 PM ET
Researchers have found a series of earthworks, including ringlike ditches, scattered throughout the Amazon rainforest of Boliva and Brazil were there before the forest emerged.
07 July 2014, 08:40 AM ET
An earthquake of preliminary magnitude 7.1 struck today along the Pacific coast of southern Mexico's state of Chiapas, according to the U.S. Geological Survey (USGS).
06 July 2014, 02:33 PM ET
Researchers have figured out a new way to predict which rivers are most at risk of dangerous flooding.
03 July 2014, 02:00 PM ET
Four fracking wastewater wells near Oklahoma City have caused hundreds of earthquakes since 2008, a new study finds.
03 July 2014, 01:03 PM ET
The NOAA GOES 13 satellite captured the storm from July 2-3, 2014. It has been declared a category-1 storm and its gaining strength. (video looped)