First Earth Day observed: Millions of people across the United States took part in the inaugural Earth Day, giving momentum to the global environmental movement.
1915
Second Battle of Ypres begins: In World War I, this battle marked the first widespread use of poison gas on the Western Front.
1906
Athens Intercalated Games inaugurated: A precursor to the modern Olympics was held in Athens, Greece.
1994
Richard Nixon passes away: The 37th U.S. President died at the age of 81.
2000
Elián González seized in raid: U.S. agents took the Cuban child from his relatives’ home in Miami, bringing a high-profile custody dispute to a close.




