Ada Lovelace wrote extensive notes on the world’s first computer. Her innovations foreshadowed those used in twentieth-century PCs.

Some people born in able bodies feel as if they were meant to have disabilities. How should the medical community be responding?

In recent experiments, scientists brought back cellular functions to the brains of dead pigs, recalling early galvanism.

In China, gramophone and camera in tow, botanist and explorer Joseph Rock collected seeds from the tree peony that bears his name.

“Little Mothers’ Leagues,” a program started by Dr. S. Josephine Baker at the turn of the last century, taught school-age girls to care for babies.