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10 of the Scariest-Looking Animals in Existence

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10 of the Scariest-Looking Animals in Existence

NASA’s Perseverance Rover Just Collected the First-Ever Rock Sample From Mars

The core sample seen in its not-yet-sealed titanium tube.

NASA’s Perseverance Rover Just Collected the First-Ever Rock Sample From Mars

The Reason Heat Makes You So Tired

This can't be comfortable.

The Reason Heat Makes You So Tired

24 Fascinating Facts About the Solar System

Photos.com/Getty Images Plus

24 Fascinating Facts About the Solar System

Koalas Have Fingerprints That Are Nearly Indistinguishable From Ours

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Octopuses Will Throw Things to Scare Off Unwelcome Guests

You want trouble? You can get trouble.

Listen to the Mysterious Sound of the Northern Lights

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What Causes Eye Floaters?

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Appetite for Distraction: Does Watching TV Make You Hungrier?

Watching television can influence how much we eat.

The Best Telescopes and Astronomy Equipment for Beginners, According to Experts

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The Reason Coffee Makes Some People Sleepy

"Why isn't this working?"

Immunologist vs. Virologist vs. Epidemiologist: What’s the Difference?

They really could be immunologists, virologists, or epidemiologists.

Don’t Smell the Flowers: How Alnwick Castle’s Poison Garden Finds Beauty in the World’s Deadliest Plants

David Clark, Wikimedia Commons // CC BY-SA 2.0

What's the Difference Between Hurricanes, Cyclones, and Typhoons?

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Woof: Why Wet Dog Smell Is a Thing—and How to Prevent It

Wet dog smell is an assault on the senses.

Breaking News: Cats Don't Want to Work for Their Food

Cats like food when it's served without any hassle.