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New Covid Shots Recommended for Americans 6 Months and Older This Fall

All Americans ages 6 months and older should receive one of the new Covid-19 vaccines when they become available this fall, scientific advisers...

A Trilobite Pompeii Preserves Exquisite Fossils in Volcanic Ash

Hundreds of millions of years ago, trilobites could be found all over the Earth. Cloaked in tough exoskeletons, the animals left behind countless...

A Dead Russian Satellite Broke Into More Than 100 Pieces in Space

A decommissioned Russian satellite fractured in space on Wednesday, creating a cloud of debris in low Earth orbit that prompted astronauts aboard the...

Purdue Opioid Settlement on Verge of Collapse after Supreme Court Ruling

The hard-fought settlement of thousands of lawsuits against Purdue Pharma was close to capsizing on Thursday, after the Supreme Court rejected liability protections...

The Last Stand of the Woolly Mammoths

For millions of years, mammoths lumbered across Europe, Asia and North America. Starting roughly 15,000 years ago, the giant animals began to vanish...

Two Killer Asteroids Are Flying by Earth, and You May Be Able to See One

This week, two asteroids — one big enough to destroy a city, and the other so large it could end civilization — are...

Was the Dingo Born to Be Wild?

This article is part of our Pets special section on scientists’ growing interest in our animal companions.Dingoes are muscular, graceful canids with pricked...

It’s Brutus, Not Bruno! The Etiquette of Remembering Your Friends’ Pets’ Names.

Kiyomi Lowe regularly hears people mispronounce her name or sometimes forget it altogether. “I get Naomi, Kaiomi, sometimes Kimmy,” she said. It doesn’t...

C.D.C. Scales Back Recommendations for R.S.V. Vaccine

In an unusual move, federal health officials narrowed their recommendations for who should receive the vaccine against the respiratory syncytial virus.The Centers for...

If You Give a Frog a Sauna, It Might Fight Off a Deadly Fungus

For decades, a deadly fungal disease has been stalking the world’s amphibians, wiping out frogs, toads and salamanders from the mountain lakes of...

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