Water

After delays and months of uncertainty, triathletes finally took the plunge into the Seine River in Paris.

Olympians Finally Got to Swim in the Seine River

After months of uncertainty, the women's and men's triathlon events kicked off with a dip in the long-polluted waterway that runs through the heart of Paris

Six of the 12 islands, including Hiva Oa, are permanently inhabited.

These Remote Volcanic Islands in the South Pacific Just Became a UNESCO World Heritage Site

The Marquesas, located some 3,000 miles from their nearest continental neighbor, are some of the most isolated islands on the planet

Tomasz Stachura, one of the divers who found the wreck, saw bubbles inside some of the Champagne bottles.

Divers Find Crates of Unopened Champagne in 19th-Century Shipwreck

Discovered near Sweden, the vessel was loaded with bottles of sparkling wine, mineral water and porcelain

Brazilian Olympic surfer Gabriel Medina pops up after riding a barrel wave at Teahupo'o during the Summer Games on Monday. The photo by Jérôme Brouillet has gone viral.

The Story Behind This Breathtaking Viral Photo of an Olympic Surfer

Jérôme Brouillet, a photojournalist with the Agence France-Presse (AFP), captured an iconic moment when Brazilian surfer Gabriel Medina celebrated after setting an Olympic record

Fish swim by an ancient Roman mosaic once part of a wealthy villa in the city of Baiae.

Divers Discover Mesmerizing Roman Mosaic Beneath the Sea

Found near Naples, the marble slabs once adorned a villa in a city known as the Las Vegas of the Roman Empire

Shade-protecting overhangs known as awnings line a street in New York City in the 1850s.

Six Innovative Ways Humans Have Kept Cool Throughout History

From sleeping porches to coastal escapes, these tips and tricks helped people deal with extreme heat before the advent of air-conditioning

Submerged under 50 feet of water off the coast of Wisconsin, the Margaret A. Muir has largely fallen apart. 

Shipwreck Found in Lake Michigan 130 Years After Sinking With Captain's 'Intelligent and Faithful' Dog Onboard

The captain said he would "rather lose any sum of money than to have the brute perish as he did"

The Brazilian sharpnose sharks were purchased from fishers between September 2021 and August 2023.

Thirteen Sharks Test Positive for Cocaine Off the Coast of Brazil

All of the wild Brazilian sharpnose sharks tested in a new study had the drug in their bodies, but many questions remain about cocaine's effects on aquatic creatures—and the humans who eat them

Established in 2019, Indiana Dunes National Park represents one of the most understated successes of 20th-century conservation—and the battle is far from over today.

Inside the Fight to Save the Indiana Dunes, One of America's Most Vulnerable National Parks

Caught between steel mills, suburbs and a hard place, the 15,000-acre site is a fantasia of biodiversity—and a case study for hard-fought conservation

A lesser flamingo feeds at Lake Bogoria, in Kenya.

How Will Climate Change Hurt Lesser Flamingos?

Their food supply in East African lakes could collapse as rains increase

The mayor of Paris, Anne Hidalgo, took a brief swim in the Seine River wearing a wetsuit and goggles on July 17.

Paris Mayor Takes a Dip in the Seine Ahead of the Summer Olympics

The city spent $1.5 billion to improve water quality in the river, where several Olympic events are scheduled to take place

Baby beluga whales and adults alike spend the summer in the Churchill River.

Watch Chatty Beluga Families Migrate With These Stunning Live Cams in Canada

Polar Bears International and Explore.org are once again capturing video footage and audio recordings of the social marine mammals as tens of thousands congregate in the Churchill River this summer

The Mount Rainier white-tailed ptarmigan is one of the few animals that spends its entire life at high elevations.

Meet the Rare, 'Beautiful' Birds That Thrive in Snow and Are at Risk Because of Climate Change

The U.S. Fish and Wildlife Service listed the Mount Rainier white-tailed ptarmigan as threatened under the Endangered Species Act this month

The two Hudson Bay polar bear groups are often considered indicators of how the 17 other polar bear subpopulations will fare in the future.

Time Is Running Out for the Hudson Bay Polar Bears

The southern and western subpopulations are on track to disappear as sea ice becomes too thin amid rising global temperatures

The smaller of the two grave slabs weighs around 154 pounds.

With the Recovery of Massive Grave Slabs, England's Oldest Shipwreck Continues to Reveal Its Secrets

Maritime archaeologists hoisted the heavy artifacts, made of a special type of limestone, from 23 feet below the surface of the English Channel

A simulated perspective of Olympus Mons, the tallest volcano in the solar system, with water frost at its peak.

Astronomers Discover Water Frost on Mars' Tallest Volcanoes

On early winter mornings, a thin layer of ice forms in craters atop the Red Planet's towering peaks, near its equator, according to a new study

Val Castor, a veteran storm chaser for KWTV in Oklahoma City, saw the huge chunk of ice in a ditch on the side of the road.

Pineapple-Sized Hail Stone Falls in Texas—and It Might Set a New State Record

Veteran storm chaser Val Castor spotted the behemoth ice chunk in a ditch near Vigo Park in the Texas panhandle

A partially dried bed of Lake Pátzcuaro in Michoacán, Mexico. Rising temperatures and decreased rainfall are contributing to droughts in the area.

Mexico City's Reservoirs Are at Risk of Running Out of Water

Amid climate change, drought and aging infrastructure, the largest metropolitan area in North America is struggling to conserve water in a major reservoir system

The 311-foot-long vessel was built in Connecticut starting in 1941 and made six war patrols in search of Japanese warships.

Wreck of WWII Submarine Found After 80 Years

The USS Harder, known by the nickname "Hit ‘em HARDER," was led by a commander known for his 'particularly audacious attacks' on Japanese warships

The researchers used drone footage and tracking devices to analyze the behavior of 11 orcas in the northern Pacific Ocean.

Between Dives, Orcas Take Only a Single Breath

A new study finds the black-and-white marine mammals tend to make shorter, shallower dives compared to humpback and blue whales, making orcas the "sprinters" of the ocean

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