In 1908, the Wright Brothers began testing what would become the first U.S. Army airplane. Many people who witnessed these tests had never seen a man take flight. Within ten years, entire battles would be fought in the sky.
On October 29, 1969, Stanford programmer Bill Duvall sent a single-word message—"login"—to UCLA student programmer Charley Kline, 350 miles away. Transmitted between two computers that each filled an entire room, this message marked the first communication between networked computers and is widely regarded as the birth of the internet.