When Karoly Takacs, a sergeant in the Hungarian army, lost his shooting hand in a grenade explosion, it was as if a pianist had lost his fingers or a bird its wings. Competing in the Olympics of 1940 didn’t just seem unlikely—it seemed impossible. But Takacs didn’t surrender to fate. He quietly made his way to London, where he was asked, “Why have you come? "He replied simply, “I have come to learn.”

New farms could save a lot by building their own incubators. Ideally eggs require a temperature of 37.5°C and take 21 days to hatch. A...

Steve Jobs never let his children use an I-Pad and Bill Gates didn't let his children use phones until they were 14 years old. Creators...