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April 19, 2019

The next generation of wireless is on its way. Experts explain the science behind the new tech, and why some are cautioning a slower rollout. Plus, researchers have discovered a new species of ancient human—but its placement on the human family tree is still up for debate.

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16:31

How The Sap Runs

Scientists tap into how trees move gallons of fluids from the ground to the atmosphere every day. Plus, the freeze-thaw secrets of sugar maple trees.

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