Earlier this year, a Swiss startup began removing CO2 from the atmosphere using a large vacuum-like machine.

Their ultimate goal is to start reversing the damaging effects of climate change by reducing CO2 — a major component of atmospheric pollution — on a global scale.

While the machine's development is a huge step forward, one little problem remains — where does all that collected CO2 go?

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Retired judge Howard Broadman helped his grandson get a kidney in the future — and he didn't even need time travel to do it.

He did have to make an incredibly generous move, though.

Three years ago, he donated one of his kidneys — not to his beloved grandson, but to a total stranger. Yep. You read that right. A stranger.

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In 2015, a Sports Illustrated article profiled the deaths of 11 high school football players.

Five of the deaths were due to severe blows to the head. And as recently as November 2016, a 15-year-old Texas football player died after suffering a head injury while playing football.

"There are about 1.3 million high school and 2.8 million youth football players in this country. That's more than 4 million children and teenagers playing football," Ralph Nader and Kenneth Reed wrote in a Chicago Tribune op-ed. "Compare that number with the 1,700 or so adults playing football in the NFL. Yet, the nation's focus, when it comes to concussions, is on the NFL. That needs to be flipped."

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