In 1923, archaeologist Howard Carter unsealed the burial chamber of the recently discovered tomb of the Egyptian pharaoh Tutankhamen.

In 1959, Fidel Castro was sworn in as prime minister of Cuba.

In 1968, the United States' first 911 emergency phone system went into service in Haleyville, Ala.

In 2005, the Kyoto Protocol for the reduction of greenhouse gases took effect for 141 ratifying nations.

TODAY'S BIRTHDAYS

Henry M. Leland (1843-1932), Cadillac and Lincoln Motor Co. founder

Edgar Bergen (1903-1978), ventriloquist

Vera-Ellen (1921-1981), actress/dancer

Sonny Bono (1935-1998), singer/politician

LeVar Burton (1957- ), actor

Ice-T (1958- ), actor/rapper

John McEnroe (1959- ), tennis player

Christopher Eccleston (1964- ), actor

Jerome Bettis (1972- ), football player

Mahershala Ali (1974- ), actor

Elizabeth Olsen (1989- ), actress

The Weeknd (1990- ), singer-songwriter.

TODAY'S FACT

Hundreds of millions of 911 emergency calls are made in the United States each year. The Federal Communications Commission estimates that 80 percent are wireless calls.

TODAY'S NUMBER

30 - broadcast radio stations in the United States in 1922. Today there are more than 15,000.