09 April 2014, 12:01 AM ET
The San Joaquin River is the most endangered river in America, according to a 2014 report by the nonprofit American Rivers. Excess diversions threaten to run even more of the river dry.
08 April 2014, 12:33 PM ET
Wild winds stirring up choppy waves behind the Canary Islands grabbed the top spot in NASA's annual Tournament Earth photo competition.
07 April 2014, 05:17 PM ET
An earthquake of preliminary magnitude 5.0 shook southern France today (April 7), according to France's National Seismic Monitoring Network.
07 April 2014, 04:41 PM ET
Arctic sea ice hit its annual peak on March 21. It was the fifth-lowest maximum extent since 1979.
07 April 2014, 02:55 PM ET
Photographer Rachel Sussman traveled the planet for a decade in search of organisms that have witnessed thousands of years of history. Her stunning images are featured in a new book, "The Oldest Living Things in the World."
07 April 2014, 02:26 PM ET
An extinct marine predator entombed in a seafloor "Pompeii" for 520 million years had a sophisticated heart and blood vessel system similar to those of its distant modern relatives, arthropods such as spiders, lobsters and millipedes.
07 April 2014, 02:09 PM ET
Photographer Rachel Sussman traveled the planet in search of organisms that have been living for 2,000 years or more, compiling images for her book, "The Oldest Living Things in the World."
07 April 2014, 01:20 PM ET
An earthquake of preliminary magnitude 4.0 struck Oklahoma today, according to the U.S. Geological Survey. Scientists think fracking-related wastewater injection is to blame for the state's uptick in seismic activity.
07 April 2014, 11:57 AM ET
A massive volcano in Ecuador erupted Friday, shooting a massive cloud of ash several miles into the air.
07 April 2014, 11:02 AM ET
Combined with vitriol, climate disinformation is leading to threatening campaigns against some scientists.
07 April 2014, 08:23 AM ET
A new astronaut-snapped photo shows the Intracoastal Waterway at Port Aransas, Texas, a mixture of natural and man-made channels used to move commodities such as petroleum.
06 April 2014, 05:22 PM ET
Brittlebush is a common desert plant in the American Southwest. These medium-sized shrubs add a splash of yellow color to the dry, arid landscapes.
06 April 2014, 01:00 PM ET
A new model seeks to explain why Earth's plate tectonics is unique among the sun's rocky planets. It all comes down to tiny minerals in rocks.
04 April 2014, 08:34 PM ET
A tar mat washing ashore reminds the United States of the continuing oil-spill problems in the Gulf of Mexico.
04 April 2014, 07:39 PM ET
What can be done to stop the disappearance of American hemlocks?
04 April 2014, 06:38 PM ET
A new look at magnetic signals in the southeastern United States reveals that Florida stuck to North America's heel like a piece of old tape about 300 million years ago, when the central and southern Appalachian mountains were built.
04 April 2014, 05:20 PM ET
An earthquake of preliminary magnitude 5.7 shook Greece today (April 4), according to the U.S. Geological Survey (USGS).
04 April 2014, 01:22 PM ET
As a seafloor volcano continues to erupt in a remote part of the Pacific Ocean, a newborn island has swallowed its neighbor whole, images from space show.
03 April 2014, 04:24 PM ET
California's snowpack is at just 32 percent of normal. NASA is helping to provide week-by-week measurements of the drought-stricken river basins in the Sierra Nevada mountains, the source of much of the state's drinking water.
03 April 2014, 02:16 PM ET
Volcanology has come a long way since the days of Pompeii. Now, satellite-based systems offer a way of measuring whether a volcano is likely to erupt soon.
03 April 2014, 09:53 AM ET
A strong aftershock rattled northern Chile late Wednesday night (April 2), a day after an earthquake of magnitude 8.2 triggered a tsunami in the region, according to the U.S. Geological Survey (USGS).
03 April 2014, 02:03 AM ET
A computer model can determine where a hurricane's surge will land.
02 April 2014, 05:19 PM ET
The earthquake that rocked Chile Tuesday struck in a stretch of the Pacific coast that had been alarmingly quiet for more than a century. Some worry that the rupture still has more built-up stress to unleash.
02 April 2014, 04:50 PM ET
A deadly mudslide that killed at least 29 people when it engulfed the small town of Oso, Wash., in mud and rocks nearly two weeks ago could have been prevented, according to Dave Petley, a professor of hazard and risk at Durham University.
02 April 2014, 04:05 PM ET
A powerful 8.2-magnitude earthquake that rocked Chile Tuesday night (April 1) originated at a rupture in the Earth's crust that has produced some of the world's strongest earthquakes in history.
02 April 2014, 01:32 PM ET
A three dimensional reconstruction of a pair of dinosaur tracks from the Paluxy River in Texas. A long-necked sauropod passed through, followed by (or perhaps chased by) a meat-eating theropod.
02 April 2014, 08:46 AM ET
Do you know what you need to do if an earthquake hits?
02 April 2014, 01:54 AM ET
No one can predict the future, but are there reasons to wait to react to climate models?
01 April 2014, 09:34 PM ET
A massive earthquake of magnitude 8.2 struck Tuesday (April 1) off the coast of northern Chile, prompting a tsunami warning, according to the U.S. Geological Survey (USGS).
01 April 2014, 05:27 PM ET
New satellite photos reveal the astonishing damage from a deadly landslide that swept through the small town of Oso, Wash., earlier this month.
01 April 2014, 01:18 PM ET
Extreme bicycle racers have set a new record on the Iditarod Trail Invitational, a frigid, 1,000-mile endurance race in the Alaskan tundra. But record low snowfall this year may have played a role in the record.
31 March 2014, 10:49 PM ET
Computer Geek, Sean Hoban, uses mathematical and computational tools to preserve endangered plant species.