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A 2019 study found that teenagers who spend more than three hours per day on social media have double the risk for anxiety and depression symptoms.

Surgeon General Calls for Placing Warning Labels on Social Media Platforms

Vivek H. Murthy views social media as a contributor the mental health crisis in young people, and he suggests tobacco-style warnings on the apps

Archaeologists used manned and unmanned submersibles to recover artifacts from the wrecks.

Cool Finds

Archaeologists Recover 900 Artifacts From Ming Dynasty Shipwrecks in South China Sea

The trove of objects—including pottery, porcelain, shells and coins—was found roughly a mile below the surface

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 bottles were discovered in five storage pits in a cellar at Mount Vernon.

Preserved Fruit From the 18th Century Found at George Washington’s Estate

During a renovation project, archaeologists uncovered intact bottles containing preserved cherries and berries that are more than 250 years old

Photographer Miles Astray shot this image of a flamingo scratching itself with its beak on a beach in Aruba.

How a Real Photo of a Flamingo Snuck Into—and Won—an A.I. Art Competition

The photographer entered the image into a contest’s artificial intelligence category to “prove that human-made content has not lost its relevance”

The white bison calf and its mother were spotted in Yellowstone National Park.

Rare White Bison Calf Born at Yellowstone National Park

A photographer spotted the calf on June 4. White buffalo are sacred to some Native American tribes, and the birth has been called a “blessing and a warning”

An artist's rendering of the Voyager 1 spacecraft entering interstellar space.

After Months of Glitches and Gradual Fixes, Voyager 1 Is Fully Operational Once Again

Currently 15 billion miles away from Earth, one of NASA’s longest-tenured spacecraft is back from the brink after a technical failure last year put its future in question

Titian, The Rest on the Flight into Egypt, 1508

A Twice-Looted Titian Masterpiece Once Discovered at a Bus Stop Hits the Auction Block

The painting, “The Rest on the Flight into Egypt,” could sell for as much as $30 million

Purple squares illustrate auroras on Mars, as detected by NASA’s MAVEN orbiter between May 14 and May 20. The brighter the purple, the more auroras present.

Mars Was Hit With a Solar Storm Days After Earth’s Aurora Light Show, NASA Says

Studying this event could hold lessons for scientists about how to protect astronauts from radiation on future trips to the Red Planet

The artworks are the only pendant marital portraits of an Amsterdam couple that Hals ever created.

These Dutch Newlyweds Had Their Portraits Painted Nearly 400 Years Ago. But Who Were They?

A curator has finally figured out the identity of the couple painted by Frans Hals around 1637

Located in Noblesville, Indiana, on the outskirts of Indianapolis, Nickel Plate Express offers both train rides and railbike tours.

Railbiking Is Catching On Across the Nation—Here’s Where to Try It Yourself

Sit back, relax and pedal your way along historic railroad tracks

False mermaid-weed is small and only emerges for a short window every spring.

Cool Finds

Rare ‘Absolutely Tiny’ Plant, Not Seen for More Than a Century, Found in Vermont

The last time a botanist recorded a sighting of false mermaid-weed in the state was in 1916

A female Anopheles mosquito, the type that transmits malaria.

Ancient DNA Illuminates the History of Malaria, One of the World’s Deadliest Diseases

Researchers extracted parasitic DNA from preserved teeth and bones, revealing how malaria spread across the globe in a new study

Pottery fragments found onsite are lined in purple pigment, suggesting they were once containers for dye.

Cool Finds

In This Ancient Workshop, Greeks Crushed Snail Glands to Make the Purple Dye Worn by Royalty

Archaeologists discovered remnants of the small factory on an island in Greece

Captured by the Hubble Space Telescope, the heliosphere of a young star, LL Orionis, collides with an interstellar medium of dust. A similar event with our own sun, researchers say, might have occurred between two and three million years ago.

A Giant Interstellar Cloud May Have Once Enveloped Earth, Potentially Causing Ice Ages

Astronomers suggest this cold, dense cloud compressed our sun’s protective field between two and three million years ago, leaving the Earth exposed to cosmic material

After Shackleton's death, the ship was used for seal hunting, Arctic research and rescue missions.

Ernest Shackleton’s Last Ship, Quest, Discovered Off the Coast of Canada

The famed explorer died of a heart attack aboard the ship near South Georgia Island in 1922, and it sank in the north Atlantic Ocean in 1962

Akira Endo discovered the first statin, a class of molecule that decreases the production of cholesterol. He died June 5 at the age of 90.

Akira Endo, Biochemist Who Found a Way to Fight Heart Disease, Dies at 90

Endo’s research paved the way for the development of drugs to treat high cholesterol and reduce the risk of heart attacks or strokes

Newly examined fossils suggest monotremes—egg-laying mammals—were once much more abundant in Australia than they are today.

Meet the ‘Echidnapus,’ an Extinct Creature That Resembles Both the Echidna and Platypus of Today

The species is among three newly identified monotremes, or egg-laying mammals, discovered from fossils in Australia that are shedding light on the odd animals’ evolution

An endangered Przewalski's horse is released into the Altyn Dala "Golden Steppe" in central Kazakhstan.

Endangered Wild Horses Return to Kazakhstan for the First Time in at Least 200 Years

The international effort, led by the Prague Zoo, released seven Przewalski’s horses to their native steppe habitat in central Asia

These rare early copies of the Declaration of Independence, the Constitution and the Bill of Rights will go under the hammer on June 26.

You Could Own Rare Copies of the Nation’s Founding Documents, Just in Time for the Fourth of July

Sotheby’s is auctioning early printings of the Declaration of Independence, the Constitution and the Bill of Rights, as well as a 1790 Rhode Island broadside

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