The brutal beheading of Cicero, last defender of the Roman Republic
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The brutal beheading of Cicero, last defender of the Roman Republic

The second-century A.D. historian Appian vividly captured the moment the Roman Republic truly died: When the great orator Marcus Tullius Cicero was struck down by the forces of…

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Meet the skier who made the ‘impossible’ first solo descent of K2
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Meet the skier who made the ‘impossible’ first solo descent of K2

Editor's Note: This week we are celebrating our 2019 Adventurers of the Year. To do that, each day we will reveal a new honoree, starting today. Come back…

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‘Ice tsunami’ crashes onto northern lake shores. Here’s why.
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‘Ice tsunami’ crashes onto northern lake shores. Here’s why.

Winter is coming to towns along the shores of the Great Lakes—literally, as walls of ice have risen from the lakes and piled up on shorelines. These ominous…

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Why do these monkeys nurse each other’s babies?
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Why do these monkeys nurse each other’s babies?

Lactating and nursing cost a lot of energy. There must be some benefit to spending it on someone else’s infant.   Being a mom is hard enough, but…

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20 wild and beautiful U.S. state parks
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20 wild and beautiful U.S. state parks

Why insect populations are plummeting—and why it matters
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Why insect populations are plummeting—and why it matters

Rocky Mountain locusts once gathered in such large numbers that they blotted out the sun over the Great Plains, rivaling the famous bison herds in size and appetite.…

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Take a hike in Tasmania’s pristine wilderness
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Take a hike in Tasmania’s pristine wilderness

It took millions of years, as well as earthquakes, volcanic activity, continental drift, and extreme conditions—from hot, humid temperatures to ice ages—to create the unique landscape and diverse…

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Your best photos of the week, February 15, 2019
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Your best photos of the week, February 15, 2019

“I was out shooting.” If you didn’t have context, what would you think this sentence was about? Probably not photography. “To take a picture or series of pictures…

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12 photos show the adorable pangolin in all its glory
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12 photos show the adorable pangolin in all its glory

They look like reptiles, all covered in scales. They look like armadillos, the way they roll up in a ball. They look like anteaters, with those long snouts…

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See the best pictures from NASA’s official photographer
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See the best pictures from NASA’s official photographer

If you love space, odds are you’ve admired the work of Bill Ingalls. He has been NASA’s senior contract photographer for 30 years, a job that has taken…

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Bears
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Bears

Bears are mammals that belong to the family Ursidae. They can be as small as four feet long and about 60 pounds (the sun bear) to as big…

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Moon photos from the 1960s were developed in space—here’s how
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Moon photos from the 1960s were developed in space—here’s how

New ‘astonishing’ tarantula has strange horn on its back
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New ‘astonishing’ tarantula has strange horn on its back

As soon as John Midgley got back to camp and opened the small jar, he knew he had found something incredible. In the light of the crackling fire…

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How sea snakes, surrounded by salt water, quench their thirst
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How sea snakes, surrounded by salt water, quench their thirst

Most yellow-bellied sea snakes spend their entire lives at sea. They rarely end up on land and are vulnerable there, since their paddle-shaped tails and keeled undersides make…

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