The 108-story Sears Tower in Chicago is topped out at 1,451 feet (442 m) as the world's tallest building. Date: May 4, 1973 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1973 📅 On This Day (Today)

The South African Defence Force attacks a SWAPO base at Cassinga in southern Angola, killing about 600 people. Date: May 4, 1978 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1978 📅 On This Day (Today)

Margaret Thatcher becomes the first female Prime Minister of the United Kingdom. Date: May 4, 1979 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1979 📅 On This Day (Today)

Twenty sailors are killed when the British Type 42 destroyer HMS Sheffield is hit by an Argentinian Exocet missile during the Falklands War. Date: May 4, 1982 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1982 📅 On This Day (Today)

The PEPCON disaster rocks Henderson, Nevada, as tons of Space Shuttle fuel detonate during a fire. Date: May 4, 1988 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1988 📅 On This Day (Today)

Space Shuttle Atlantis launches on mission STS-30 to deploy the Venus-bound Magellan space probe. Date: May 4, 1989 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1989 📅 On This Day (Today)

Iran–Contra affair: Former White House aide Oliver North is convicted of three crimes and acquitted of nine other charges; the convictions are later overturned on appeal. Date: May 4, 1989 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1989 📅 On This Day (Today)

Latvia declares independence from the Soviet Union. Date: May 4, 1990 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1990 📅 On This Day (Today)

Israeli Prime Minister Yitzhak Rabin and PLO leader Yasser Arafat sign a peace accord, granting self-rule in the Gaza Strip and Jericho. Date: May 4, 1994 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1994 📅 On This Day (Today)

A federal judge in Sacramento, California, gives "Unabomber" Theodore Kaczynski four life sentences plus 30 years after Kaczynski accepts a plea agreement sparing him from the death penalty. Date: May 4, 1998 Read more on Wikipedia → 📅 Other events on May 4 📅 Events on this day in 1998 📅 On This Day (Today)