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Louvre employees rehung Eugene Delacroix's 1830 oil painting Liberty Leading the People on Thursday after a six-month restoration.

The Paris Olympics

'Liberty Leading the People' Returns to the Louvre After a Breathtaking Restoration

Eugène Delacroix's 1830 oil painting had been covered in grime and discolored by eight layers of varnish

The exhibition features recreations of the tomb's antechamber, burial chamber and treasury.

See 1,000 Perfect Replicas of Objects Unearthed From King Tut's Tomb

A traveling exhibition on view in Washington, D.C. blends education and entertainment, letting visitors get up close and personal with the ancient Egyptian pharaoh's treasures

The tornadoes uprooted and snapped some trees, but fortunately, no injuries or deaths have been reported.

Rare Tornado Spinning the 'Wrong' Direction Forms Over Oklahoma

A powerful anticyclonic tornado uprooted trees and damaged some buildings on the night of April 30, and a second unusual twister changed direction, doubling back on its path

Dutch settlers "bought" the island of Manahatta from the Lenape in 1626.

Happy 400th Birthday to New Amsterdam, the Dutch Settlement That Became New York

In 1624, Dutch settlers arrived in Manhattan. Now, officials are marking the milestone with an honest examination of the past

In more than 20 years of field research, Rakus is the first orangutan to be observed using a medicinal plant to treat wounds.

In a First, an Orangutan Healed His Own Wound Using a Known Medicinal Plant

The primate named Rakus chewed up yellow root and applied it to an open facial wound, closing the sore within days

The bomb was discovered near Mewa Arena, home of the Mainz 05 soccer club.

World War II-Era Bomb Successfully Defused Near German Soccer Stadium

The 1,110-pound ordnance is one of many bombs that have surfaced in Europe decades after the war's end

The driverless race cars were controlled with cameras, advanced processing units and sensors.

World's First Race of A.I.-Driven Cars Was Filled With Spins, Swerves and Stops

Though the cars could not compare to human drivers, the event may help improve self-driving technology, experts say

To create mouse-rat "chimeras," researchers injected rat stem cells into mouse embryos that lacked some genes for brain development.

Researchers Breed Mice With Hybrid Brains Containing Cells From Rats

In one experiment, rat neurons helped mice restore their senses of smell—the first time any animal has perceived the world through the sensory hardware of another species

Leonardo is best known for painting the Mona Lisa and the Last Supper.

The Louvre Is Thinking About Moving the 'Mona Lisa' to Its Own Room Underground

Officials hope to improve visitors' experience in the Paris museum's Salle des États

Researchers discovered broken pottery in a medieval ditch beneath a bridge in the city's center.

Cool Finds

Archaeologists Discover Medieval Artifacts Ahead of Bridge Demolition in England

Found during a construction project near the railway station in York, the trove includes pottery and bones

A coal-fired power plant in Germany, which derives about 27 percent of its national electricity from coal.

Seven Major Nations Agree to Phase Out Coal by 2035, Though Vague Language Leaves Wiggle Room

The wealthy, industrialized countries set a flexible schedule to cut one of the dirtiest fossil fuels from their economies

Previous research suggested that anger can increase people's risk of heart attacks. In the new study, researchers found that part of the reason why could be that anger briefly reduces blood vessels' ability to widen.

Can Anger Affect Your Heart Health? Scientists Find the Strong Emotion Impacts How Blood Vessels Function

The results could even help explain why stress from anger may trigger a heart attack

While penguins have feathers that shield their skin from radiation, their eyes remain unprotected. Increased ultraviolet radiation exposure could also have harmful effects for Antarctic organisms like seals, krill and plankton, per a new paper.

Antarctica's Ozone Hole Is Persisting Later Into the Year, Raising Concerns for Wildlife

As a result of the longer-lasting hole, harmful ultraviolet radiation is reaching Earth during a time when young penguins and seals are more vulnerable, scientists say

On April 25, protesters demonstrate against Venice's new day-tripper tax.

Venice's First-of-Its-Kind 'Day-Tripper Tax' Sparks Outrage

Protestors say the entry fee is an ineffective solution to the city’s overtourism challenges

Astronauts could run around the interior walls of cylindrical homes on the moon.

Could Running Around a 'Wall of Death' Help Astronauts Stay in Shape on the Moon?

Short sprints on these cylindrical structures, long used by daredevil motorcycle riders, might promote muscle mass and bone density in low-gravity conditions

The Greek philosopher Plato was a student of Socrates and a teacher of Aristotle.

This Newly Deciphered Papyrus Scroll Reveals the Location of Plato's Grave

The mysterious site is mentioned in a text buried by Mount Vesuvius' eruption 2,000 years ago

One of the loose zebras runs through a pasture before being recaptured. The zebra that is still on the loose was spotted on Monday.

Four Zebras Escape From Trailer on Washington State Highway—One Is Still on the Loose

The animals ran around residential areas before community members—including a former rodeo bullfighter—helped corral three of them

John Lennon plays the rediscovered 12-string Framus Hootenanny guitar.

Cool Finds

Man Finds John Lennon's Forgotten Guitar in His Father's Attic

The 12-string instrument, which is going to auction in late May, spent 50 years hidden away in the British countryside

A close-up of the "mane" of the Horsehead Nebula, located some 1,300 light-years from Earth. This view was captured by the James Webb Space Telescope's Mid-Infrared Instrument.

See New Images of the Horsehead Nebula, Captured in Striking Detail by the James Webb Telescope

The beautiful infrared imagery features one of the best known locations in space to study the evolution of stars and interstellar matter

The Eta Aquarids appear to originate from a bright star in the constellation Aquarius.

How to Watch the Dazzling Eta Aquarid Meteor Shower, Bringing an Unusual 'Outburst' to Skies This Weekend

This year's spectacle will be more impressive than usual, as the Earth passes through a concentrated clump of 3,000-year-old comet debris

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