Erich Berger and Mari Keto have made radioactive jewels, part of their Inheritance Project, that are unwearable by humans — and remain locked in a concrete vault equipped with radiation measurement devices.
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President Trump leaves the stage after addressing the Conservative Political Action Conference. He has repeatedly called for arming teachers after the school shooting in Florida.
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A woman looks at 15 crosses posted on a hill above Columbine High School in Littleton, Colo. in remembrance of the 15 people who died during a shooting rampage at the school in 1999.
Sci-fi writer William Gibson says the best way to imagine new technologies and how they could affect society is not through current expertise but by talking to "either artists or criminals."
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John Perry Barlow spent much of his life advocating for and fighting to preserve the openness of the Internet. Have those who grew up with his teachings kept that spirit alive?
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President Trump and Vice President Pence watch the Inaugural Parade on Jan. 20, 2017. The military is now looking at options for a military parade at Trump's request.
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