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Science

Iceland is using more energy on bitcoin than it is on its homes

Iceland is using more energy on bitcoin than it is on its homes

It takes massive amounts of electricity to run the computers that create bitcoins, and large virtual currency companies have established a base in Iceland, which is blessed with an abundance of renewable energy.
by Associated Press

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Smartphone detox: How to power down in a wired world

Smartphone detox: How to power down in a wired world

In an era when many kids get a first smartphone at age 10, psychologists say the devices have turned us into Pavlov's dogs -- drooling for the next notification, buzz or text. Ready to dial back?
by Michaeleen Doucleff and Allison Aubrey

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A neuroscientist explains the power of sleep

A neuroscientist explains the power of sleep

Learn what the brain is doing while we're asleep, and why it matters.
by MPR News Staff

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'Consumer Reports' says Roku, Samsung smart TVs have security vulnerabilities

'Consumer Reports' says Roku, Samsung smart TVs have security vulnerabilities

"We found that a relatively unsophisticated hacker could change channels, play offensive content, or crank up the volume," the consumer watchdog says.

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SpaceX set to launch world's most powerful rocket

SpaceX set to launch world's most powerful rocket

The company is getting ready for the first flight of its massive Falcon Heavy. It will be the most powerful rocket in use -- if it doesn't blow up.
by Nell Greenfieldboyce

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Screen addiction among teens: Is there such a thing?

Screen addiction among teens: Is there such a thing?

The psychiatric profession is still divided, but there are treatment programs, apps and a new public campaign to address media overuse.
by Anya Kamenetz

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'Game changer': Maya cities unearthed in Guatemala forest using lasers

'Game changer': Maya cities unearthed in Guatemala forest using lasers

The technology provides them with an unprecedented view into how the ancient civilization worked and lived, revealing almost industrial agricultural infrastructure and new insights into warfare.

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