Water

An image of Mars' surface captured by China's Zhurong rover, which landed in May 2021 and studied sand dunes near its landing site for nine months.

Sand Dune Features Hint at 'Recent' Water Flow on Mars

Between 1.4 million and 400,000 years ago, liquid salt water may have made cracks and crusts near the Martian equator, per data from China's Zhurong rover

Representative Robert F. Broussard believed hippos imported from Africa would rid Louisiana and Florida of the water hyacinths smothering their waterways.

How the U.S. Almost Became a Nation of Hippo Ranchers

In 1910, a failed House bill sought to increase the availability of low-cost meat by importing hippopotamuses that would be killed to make "lake cow bacon"

Brazilian reef octopuses, like other types of cephalopods, defend themselves against predators by inking and extending their mantles. 

Octopuses May Have Vivid Nightmares, Video Suggests

Costello, a male Brazilian reef octopus, had "bizarre" defensive outbursts while sleeping in a lab

The three-foot-long fiberglass mermaid sold for $300 at auction.

Who Wants to Buy the Creepy Dolls and Bowling Balls That Wash Up on Texas Beaches?

Hundreds of eclectic items were auctioned off to help fund the rehabilitation of sea turtles and birds

View of the Skagit River, with the Diablo Dam (completed in 1930) visible

On This Disputed River, Progress May Mean a Return to the Past

Winding through British Columbia and Washington, the Skagit has a history that reflects competing conceptions of advancement

The Colorado River's Glen Canyon Dam, which creates Lake Powell.

States Propose Landmark Deal to Conserve the Colorado River

The water cuts suggested by California, Arizona and Nevada are not as ambitious as those proposed by the federal government, but they will buy time

A distinct subpopulation of orcas lives in the Strait of Gibraltar off the coast of Spain, where they hunt and eat Atlantic bluefin tuna.

Orcas Are Ramming Into Ships Off Europe's Coast

One researcher says this may be a response to a "critical moment of agony" a female orca experienced with a boat

North Carolina's Camp Lejeune in 2017. From 1953 to 1987, the drinking water at the base was contaminated with a number of chemicals.

Common Chemical Strongly Linked to Parkinson's

Service members stationed at Camp Lejeune, where water was contaminated, had a 70 percent greater risk of developing the movement disorder, new study finds

One of the marble capitals found by swimmer Gideon Harris

Swimmer Stumbles Upon 1,800-Year-Old Marble Columns From Shipwreck Off Israel’s Coast

The artifacts help settle an unanswered question about ancient architectural materials

The Big Four Bridge crosses the Ohio River between Louisville, Kentucky, and Jeffersonville, Indiana.

Airbnb Names the Top Trending Destinations for Summer 2023

From relaxing beach towns to historic European cities, these popular spots will soon be bustling with vacationers

Paris is working on an ambitious project to clean the Seine river for use during swimming events in the 2024 Summer Olympics.

For the First Time in a Century, Paris Is Making the Seine Swimmable

The city's ambitious project will allow Olympians, and later the French public, to return to the famous river's waters

Among the entrants in the punishing race on the Yukon River was a kayaking duo from New Zealand known as the Keen Kiwis.

The World’s Most Grueling Race Journeys 1,000 Miles Down the Yukon

In a test of skill and courage, competitors navigate dangerous river rapids, narrow channels and rummaging bears in the wilds of Alaska and Canada

Platypuses are egg-laying mammals with webbed feet and duck-like bills.

Platypuses Return to Australia's Oldest National Park

The egg-laying mammals haven't been seen at the site since the 1970s, but scientists hope the newly released creatures can re-establish a population

Scalloped hammerhead sharks off the Kona coast of the Big Island of Hawaii

Hammerhead Sharks Can 'Hold Their Breath,' A First for Fish

The sharks close their gills to stay warm while hunting in deep, frigid waters, new research suggests

While river tubing is prominent from coast to coast, some spots stand out for their scenery.

Seven Perfect Summer Spots for Tubing in the United States

From Hawaii to Michigan, these waterways offer slow floats with loads of nature and scenery to take in along the way

The bridge depicted in the backdrop of the Mona Lisa has been a subject of debate for many years.

Has This Historian Identified the Bridge in the 'Mona Lisa'?

Silvano Vinceti argues that the bridge in the backdrop of da Vinci's masterpiece is the Ponte Romito in Laterina

The Seatrac on a beach on the Greek island of Samos

Greece Is Making Hundreds of Beaches More Accessible

Remote-controlled, wheelchair-friendly ramps will allow vacationers with mobility challenges to enjoy the sea

Using suction-cup sensors attached to three humpback whales, researchers captured video footage of the animals rolling around on the ocean floor.

Watch Whales Exfoliate Their Skin on the Ocean Floor

Migrating humpbacks used sand and rubble to slough off dead skin and barnacles, a behavior that may be both practical and social

Male California sea lions are polygamous and must fight to defend their territories and their harems.

Why Male California Sea Lions Are Getting Bigger

The “raccoons of the sea” have varied diets, allowing them to grow large to compete for mates

The island spans 25 acres and is located roughly six miles from the nearest town.

You Can Buy a Beautiful Uninhabited Scottish Island for $187,000

The 25-acre Barlocco Island has seabird colonies and stunning scenery—but no utilities or buildings

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