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<p>Former astronaut Commander Chris Hadfield wants to teach you everything there is to know about space exploration.</p>

Learn to be an astronaut online with Chris Hadfield

"The more you know, the less you fear." The former International Space Station commander wants to teach you all about space exploration with this MasterClass.

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Uranus stench really is the butt of all jokes

The closer you get to it, the more likely you are to smell farts and rotten eggs. It's not just a punchline, it's science.

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<p>It's hard not to anthropomorphize robots, even ones as utilitarian as this Ford factory robot. The automaker had a pair on display, running through its paces of high-precision movements.</p>

3 countries are more prepared for AI than the rest of us

Automation will affect labor markets and economies around the world, and no one is really ready. But researchers say some countries are ahead of the rest.

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Garlic bread sent to edge of space comes back less appetizing

Ballooning a chunk of garlic bread into the stratosphere probably won't become the next hot culinary trend.

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Celestial 'snow' flies in wondrous Rosetta comet GIF

It looks like it's snowing on the surface of Comet 67P, but there's more to a gorgeous new space GIF than meets the eye.

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<p>The Sip Safe wristband lets you dab on a drop of your drink to test if it's been spiked.&nbsp;</p>

This concert wristband tests if your drink has been spiked

The Sip Safe is possibly the most important wristband you'll wear at a gig.

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<p>Google Street View has captured the annual red crab migration on Christmas Island off the coast of Australia.&nbsp;</p>

Google made some poor soul run a crab gauntlet for Street View

Christmas Island's annual crab migration is a beautiful natural wonder… but capturing it for Google Street View is a different matter altogether.

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<p>This diagram shows some of the complexity involved with the transplant operation.</p>

Wounded US soldier gets first penis and scrotum transplant

A US combat veteran wounded by an IED is the recipient of a total penis and scrotum transplant performed by Johns Hopkins doctors during a complex 14-hour surgery.

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VideosSee all videos

<p>There may be invisible life just below the surface of the Red planet.</p>

Alien life on Mars might look like something here on Earth

If you want to know what might be able to survive the Red Planet, look no further than the nearest cow gut.

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Your body, and everything around you, will soon let you pay for stuff

Amazon, Mastercard and others are developing new ways for you to spend, including cashierless stores and scanning the veins in your thumb.

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<p>Who is the bad guy?</p>

Watch airport workers fight a Star Wars lightsaber battle

Commentary: At a rainy airport, the people who usually wave to help direct planes into their gates wave their illuminated wands in a fight to the death.

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<p>A tiny squid hatchling.</p>

US Army could enlist robots inspired by invertebrates

The army and University of Minnesota have developed materials that mimic the flexibility of invertebrates like worms and squids and could one day be 3D-printed on the battlefield.

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CNET FORUMS TOP DISCUSSION

Help, my PC with Windows 10 won't shut down properly

Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?