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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. Courtesy of Erich Berger hide caption

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Courtesy of Erich Berger

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. Chip Somodevilla/Getty Images hide caption

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Chip Somodevilla/Getty Images

It's Hard To Imagine How Armed Teachers Might Change Schools

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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." Ron Bull/Toronto Star via Getty Images hide caption

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Ron Bull/Toronto Star via Getty Images

Artists And Criminals: On The Cutting Edge Of Tech

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People are brought out of the Marjory Stoneman Douglas High School after a shooting at the school on Feb. 14, in Parkland, Fla. Joe Raedle/Getty Images hide caption

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Joe Raedle/Getty Images

This Week's School Shooting Was A Very American Tragedy

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People are brought out of the Marjory Stoneman Douglas High School in Parkland, Fla., after a gunman opened fire on Wednesday. Joe Raedle/Getty Images hide caption

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Joe Raedle/Getty Images

The List Of School Shootings Just Keeps Growing. Do We Still Feel Anything?

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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? Laguna Design/Getty Images/Science Photo Library RM hide caption

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Laguna Design/Getty Images/Science Photo Library RM

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. Patrick Smith/Getty Images hide caption

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Patrick Smith/Getty Images

A Military Parade Should Be About People, Not Power

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