Pitt project aims to turn world on to DC power

In the late 1880s, Pittsburgh native son George Westinghouse (using the work and genius of Nikola Tesla) won the campaign to base the United States' electric power grid on alternating current (AC). Thomas Edison, a proponent ...

Uncovering evolutionary secrets

How did the elephant get its trunk? Or the turtle its shell? How, in general, did the seemingly infinite diversity of complex animal forms on our planet arise? The scientific pursuit of how such "evolutionary novelties" come ...

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