For the many wondrous things humans can do, we can't fly on our own. But if we could, how big would our wings be? Of course, the answer depends on the person's size. But someone who's about 155 pounds ...
Humans tried to fly for centuries before Wilber and Orville Wright did it in 1903. Discover the history of human flight and how fast we can really go. Science Trek is available to stream on pbs.org ...
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