26 July 2015, 09:47 AM ET
The extensive estuarine saltwater marshes of eastern North America are large, flat, grassy areas that are flooded daily by the semidiurnal tides of the Atlantic Ocean. Check out these salt marsh photos.
24 July 2015, 02:36 PM ET
Concentric circles of rocky hills and valleys in South Africa tell a story of a billion-year-old collapsed volcano in newly released photos from NASA.
24 July 2015, 12:17 PM ET
The Peruvian government plans to make contact with the isolated Mashco Piro tribe, hoping to quell further violence in their remote region.
24 July 2015, 08:11 AM ET
A view of the deepest layer of Earth's crust under the Tibetan Plateau is possible thanks to satellite measurements of Earth's varying gravity. Results showed the layer is rucked into a series of bumps and troughs, like a kicked-up rug.
23 July 2015, 08:12 AM ET
A century-long puzzle over how delicate strands of glistening ice burst through rotting tree branches, like heads of hair, is closer to being solved.
23 July 2015, 08:08 AM ET
The unique strands of "hair ice" pop out of rotting tree branches with help from cold-tolerant fungi.
22 July 2015, 12:55 PM ET
The fungus Exidiopsis effusa has been determined to cause this odd phenomena that occurs on "rotten branches of certain trees."
22 July 2015, 12:40 PM ET
The Amazon rainforest, often thought to have been pristine wilderness before the modern era, was once domesticated, and was reclaimed by the wild only in recent centuries, research increasingly suggests.
22 July 2015, 07:31 AM ET
Puddles make water easier to spot and wipe up, but the traditional laws of physics say water should spread indefinitely. So why doesn't it?
21 July 2015, 02:56 PM ET
Subsea pools with high concentrations of carbon dioxide (CO2) have been found. Opal particles create the "distinctive color" according to the Woods Hole Oceanographic Institution.
21 July 2015, 01:42 PM ET
NASA's former climate chief finds the world's current climate goal may not prevent catastrophic losses from rising seas, ocean temperatures and changes in weather. But the extreme nature of his projections has some scientists questioning the study.
21 July 2015, 08:16 AM ET
Opal-hued pools of carbon dioxide-rich water have been found in the caldera of the Santorini volcano, deep beneath the surface of the Aegean Sea. The opal color may come from the glassy microscopic bodies of silica-based organisms.
21 July 2015, 08:14 AM ET
Scientists have discovered a series of meandering, interconnected pools chockfull of carbon dioxide deep in the Aegean Sea. The iridescent pools are called Kallisti Limnes, which in Greek means "most beautiful lakes."
21 July 2015, 01:35 AM ET
June 2015 was the warmest June on record, and there's a good chance 2015 will be the warmest year.
18 July 2015, 07:50 AM ET
A scientist who claims waning solar activity in the next 15 years will trigger what some are calling a mini ice age has revived talk about the effects of man-made versus natural disruptors to Earth's climate.
18 July 2015, 07:45 AM ET
Green globs of little critters in the ocean are responsible for half of the cloud droplets that cover the Southern Ocean during the summer – the link between the critters and clouds provides needed insight for predicting the effects of climate change.
16 July 2015, 08:58 AM ET
Surprisingly complicated cirrus clouds are seen by a satellite and by a scientific instrument aboard the ISS, matching data to a high-flying view.
14 July 2015, 10:12 AM ET
The California drought has led to some weird side effects, from a deluge of spiders and snakes to pipes being eaten by poop.
13 July 2015, 05:01 PM ET
Even 4.67 billion miles (7.5 billion km) away from Earth, the New Horizons mission at Pluto could help scientists learn more about planet Earth.
13 July 2015, 02:57 PM ET
Warming Black Sea waters fueled an intense rainfall event in Krymsk, Russia in 2012.
13 July 2015, 02:45 PM ET
During a recent marine excursion, researchers searching for lobster larva unexpectedly discovered a geologic wonder: a 50-million-year-old cluster of extinct volcanoes submerged in the water off eastern Australia.
11 July 2015, 08:11 AM ET
At the edge of Earth's magnetic field, oceanlike waves appear, and scientists think they may be responsible for the "space weather" that causes auroras and disrupts communications.
10 July 2015, 03:22 PM ET
Pollution and dust is shrinking the monsoon season, threatening the crops that feed millions.
10 July 2015, 07:20 AM ET
When dolphins dive deep, they avoid succumbing to decompression sickness, or "the bends," likely because the sea creatures have collapsible lungs and can inhale and exhale two to three times quicker than humans.
09 July 2015, 02:01 PM ET
Bumblebees are disappearing from their more southern locations, but are not expanding northward.
09 July 2015, 11:09 AM ET
Climate change is making more southerly locales too hot for bumblebees to survive, but they are not spreading north as the climate warms. That could spell trouble for many crops, which require the pollinators to produce fruits and veggies.
09 July 2015, 06:53 AM ET
Researchers from across the globe recently teamed up to accomplish what might seem like an impossible (and scary) task: counting as many of the ocean's sharks as possible.
08 July 2015, 06:40 PM ET
A towering icon of Yosemite National Park just got a face-lift, as a huge slab of rock recently peeled off Half Dome, possibly changing the route up to the top for climbers.
08 July 2015, 01:54 PM ET
The temperatures for June are in and five Western states saw their warmest June ever.
08 July 2015, 11:55 AM ET
One-third of Earth's largest groundwater basins are under threat because humans are draining so much water from them, according to two new studies.
07 July 2015, 07:05 AM ET
A starry vortex wins top prize in this year's Earth & Night Sky photo contest. Here's a look at the star-studded image along with other winners, including a lunar eclipse, dancing aurora and a psychedelic night sky above a Bolivian salt flat.
07 July 2015, 07:04 AM ET
Spotting dark, gooey and flammable tar on the beach — remnants from an oil spill in Southern California in May — just got a lot easier, thanks to NASA.
07 July 2015, 06:54 AM ET
A vortex of stars seems to swirl above Table Mountain in South Africa in the winning image of this year's International Earth & Sky Photo Contest. The entries draw attention to light pollution and the beauty of the night sky hovering above Earth.
06 July 2015, 05:03 PM ET
Scientists say the Arctic Sea ice extent in 2015 is likely to be among the lowest on record.
02 July 2015, 10:56 PM ET
As temperatures warm, so do runways, with troubling results.
02 July 2015, 10:27 AM ET
New photographs of deep-sea creatures could hold the key to helping predict climate change.