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Leonardo DiCaprio Calls Climate Change 'Defining Crisis of Our Time' in UN Speech

Leonardo DiCaprio Calls Climate Change 'Defining Crisis of Our Time' in UN Speech

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Hubble Snaps Stunning Space Bubble to Celebrate 26th Birthday

Hubble Snaps Stunning Space Bubble to Celebrate 26th Birthday

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The Most Inspiring Words You'll Hear on Earth Day are (Still) Carl Sagan's

The Most Inspiring Words You'll Hear on Earth Day are (Still) Carl Sagan's

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What Skin Condition Did Captain Planet Have?

What Skin Condition Did Captain Planet Have?

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633 MPH Rocket Sled Shreds Maglev Speed Record

633 MPH Rocket Sled Shreds Maglev Speed Record

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Watch Adam Savage Build a Kinetic Sisyphus Sculpture Out of LEGO

Watch Adam Savage Build a Kinetic Sisyphus Sculpture Out of LEGO

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Watch a Huge Snow Leopard Effortlessly Parkour Across a Wall

Watch a Huge Snow Leopard Effortlessly Parkour Across a Wall

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A Drum, Paint, and Super Slow Mo is All You Need in Life

A Drum, Paint, and Super Slow Mo is All You Need in Life

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Entire Line of JAWS Shoes Will Attack Your Wallet

Entire Line of JAWS Shoes Will Attack Your Wallet

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Experience Earth's Sublime Beauty in Crystal-Clear 4K Video

Experience Earth's Sublime Beauty in Crystal-Clear 4K Video

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Could a Lightsaber Cut Through Captain America's Shield?

Could a Lightsaber Cut Through Captain America's Shield?

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All You Need Is a Slinky to Make STAR WARS-Style Blaster Noises at Home!

All You Need Is a Slinky to Make STAR WARS-Style Blaster Noises at Home!

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Magic Leap's 'Mixed Reality' Demo Sets the Stage for the Future of AR

Magic Leap's 'Mixed Reality' Demo Sets the Stage for the Future of AR

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Grant Imahara is Building a Working, Laser-Shooting Iron Man Gaunlet

Grant Imahara is Building a Working, Laser-Shooting Iron Man Gaunlet

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Stuntman Backflips Over Formula E Race Car

Stuntman Backflips Over Formula E Race Car

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Science Explains Freddie Mercury's Incredible Voice

Science Explains Freddie Mercury's Incredible Voice

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Hundreds of Real Doctors Have Famous Fictional Doctor Names

Hundreds of Real Doctors Have Famous Fictional Doctor Names

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Watch an Ultra HD Video of the Aurora Borealis as Seen from Space

Watch an Ultra HD Video of the Aurora Borealis as Seen from Space

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Internet Declares 'Boaty McBoatface' Best Name for Research Ship

Internet Declares 'Boaty McBoatface' Best Name for Research Ship

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3 Awesome Projects We Saw at the White House Science Fair

3 Awesome Projects We Saw at the White House Science Fair

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Safely Catch Spiders With This Ingenious Device

Safely Catch Spiders With This Ingenious Device

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Could You Outrun A Fart? What a Crappy Question!

Could You Outrun A Fart? What a Crappy Question!

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MuskWatch: SpaceX Plans City on Mars!

MuskWatch: SpaceX Plans City on Mars!

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The Mystery of Kazakhstan's

The Mystery of Kazakhstan's "Dragonglass"

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