Births on May 18

Anna Chatziathanassiou, Greek figure skater

1 Feb

Ruhollah Khomeini
Iranian Ayatollah Ruhollah Khomeini returns to Tehran after nearly 15 years of exile.
16 Mar

People's Liberation Army
Sino-Vietnamese War: The People's Liberation Army crosses the border back into China, ends the war.
28 Mar

Three Mile Island accident
A coolant leak at the Three Mile Island's Unit 2 nuclear reactor outside Harrisburg, Pennsylvania leads to the core overheating and a partial meltdown.
15 Jul

Malaise speech
U.S. President Jimmy Carter gives his "malaise speech".
16 Dec

OPEC
Libya joins four other OPEC nations in raising crude oil prices, which has an immediate, dramatic effect on the United States.