Nuclear fusion could one day be a viable clean energy source – but big engineering challenges stand in the way
Even once researchers can reliably get more power out of a fusion reaction than they put in, they’ll still need to overcome ...
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As many zoo elephants are sent to sanctuaries, Phoenix Zoo will end its exhibit after Indu dies
In the last few decades, dozens of zoos have closed their elephant exhibits — a movement that’s being cheered by animal activists. The Phoenix Zoo has one elephant in its exhibit.