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<p>An American alligator eats a nurse shark at the J.N. "Ding" Darling National Wildlife Refuge in Florida.</p>

Alligators will eat sharks when given the chance

Who wins the ultimate toothy predator showdown? A study on alligator diets finds the opportunistic reptiles will snack on sharks when it's convenient.

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Astronomers observe source of gravitational waves

The European Southern Observatory detected a deep-space signal in August that turned out the be the first observable light from two neutron stars colliding, producing a kilonova that caused strong gravitational waves to pass through Earth.

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<p>This artist's impression shows two tiny but very dense neutron stars at the point at which they merge and explode as a kilonova.&nbsp;</p>

Exploding stars bring a rumble to Earth, and maybe gold, too

Scientists have observed a cataclysmic blast that may explain the origin of precious metals. The bigger news is they didn't just see it. They felt it, too.

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<p>It is not currently known what sort of drone was involved.</p>

Drone hits commercial aircraft over Canada

Commentary: The Canadian Minister of Transport says the drone was flying out of legal limits.

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<p>USC researcher Sook-Lei Liew and her partners are testing to see whether virtual reality could help restore motor function in stroke patients.&nbsp;</p>

VR could trick stroke victims' brains toward recovery

Researchers at the University of Southern California are examining how virtual reality could promote brain plasticity and recovery.

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<p>NASA sent a fidget spinner to the space station.</p>

See a fidget spinner go bonkers in space

Just when you thought the fidget spinner rage was subsiding, astronauts on the space station get one of their own.

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Want to snap a spacewalk selfie? It's harder than you think

A NASA astronaut offers up a perfect metaphor for what it's like to snap a selfie while wearing a spacesuit outside the International Space Station.

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<p>The pi-top lets you look slide down the keyboard and look inside.&nbsp;</p>

Raspberry Pi laptop lets kids get inside their computer

The pi-top laptop has a sliding keyboard and runs off Raspberry Pi.

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<p>Poor laptop.</p>

Watch a laptop destroyed by semi-automatic portable railgun

Commentary: Human ingenuity knows no bounds.

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Richard Branson buys into hyperloop high-tech train business

Richard Branson’s Virgin Hyperloop One melds the startup with his personal brand.

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<p>A rendering of asteroid 2012 TC4 whipping by earth</p>

Asteroid that just buzzed Earth may not miss on return visit

Asteroid 2012 TC4 doesn't have a very memorable name, but it might leave quite an impression years from now.

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<p>Find yourself friends who will eat bugs for you.</p>

You’re going to be eating crickets, so just get it over now

The Aspire Food Group thinks insects could help address food sustainability and insecurity, and it's using tech to make that happen.

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Get ready for 'unlimited data' of 5G networks in 2019

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Why KRACK could hit your smart home's Wi-Fi the hardest

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Exploding stars bring a rumble to Earth, and maybe gold, too

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Everything you need to know about FM radio on your phone

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