Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
On February 24, 1938, a toothbrush traded boar hair for DuPont nylon, quietly launching the synthetic-fiber age.
On February 24, 1868, the House impeached Andrew Johnson over a fired cabinet member, a first in American history.
On this day in 1582, a papal bull fixed the slipping seasons and gave us the calendar most of the world still keeps.
