How Science Fiction Got Its Start with Frakenstein

It’s not completely fanciful to say that science fiction began with three things: a dead frog, a volcano, and a teenage bride. The dead frog was one that an Italian physician named Luigi Galvani was experimenting with in the 1780s, when he found that a mild electric shock could cause the frog’s leg to twitch. It was just an induced muscle reflex, but it suggested that there might be a connection between electricity and life. The volcano was Mount Tambora in Indonesia, which exploded in ...

 Atavism In Modern Horses

Modern horses, which descend from smaller, five-toed ancestors, show similar atavisms. The fossil record documents the gradual loss of toes over time, so that in modern horses only the middle one—the hoof—remains. It turns out that horse embryos begin development with three toes, which grow at equal rates. Later, however, the middle toe begins to grow faster than the other two, which at birth are left as thin “splint bones” along either side of the leg. (Splint bones are true vestigia...