Inventions, firsts, and turning points tied to today’s date — each one sourced and dated.
On April 22, 1970, some 20 million Americans took to streets and campuses, turning scattered environmental anger into a national movement.
On April 22, 1915, German forces opened canisters of chlorine gas at Ypres, introducing industrial-scale chemical warfare.
On April 22, 1500, a Portuguese fleet bound for India drifted west and stumbled onto the coast of what would become Brazil.
