A new sodium–air fuel cell triples lithium battery energy density and could enable electric planes. It’s safer, carbon-negative, and built from cheap, abundant materials —
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Category: Tech Innovations
Blink, Predict, Smash: MIT’s 42 MPH Ping Pong Bot Is Freakishly Fast
Time lapse photos show a new ping-pong-playing robot performing a top spin. The robot quickly estimates the speed and trajectory of an incoming ball and
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