Blurry light from lens imperfections is a problem everywhere, from microscopes to telescopes to smartphone cameras. Using a tiny yet carefully engineered optical element and artificial intelligence, ...

Tan and countless other DIYers are attracting millions of views showing off the personal computers they’ve built inside ...

Ben Franklin led an effort to print paper bills in the American colonies, after a coin shortage constrained the economy.

Benjamin Franklin understood something fundamental about money that still shapes modern economies: Money only works when people believe it is real. In the early 18th century, the British colonies ...