1979: Nuclear Meltdown Occurs at Three Mile Island

On March 28, 1979, the Three Mile Island nuclear power plant experienced a partial meltdown. It was the worst-ever commercial nuclear accident in American history. Meltdown...

1977: 583 Killed as 747s Collide on Tenerife Runway

On March 27, 1977, two 747 airliners collided on a runway in the Canary Island of Tenerife, killing 583 people, more than any plane...

1868: President Andrew Johnson Impeached

On February 24, 1868, Andrew Johnson became the first U.S. president to be impeached; the Senate subsequently acquitted him by a single vote. House Impeaches...

1989: Exxon Valdez Wreck Causes Massive Oil Spill

On March 24, 1989, the oil tanker Exxon Valdez struck a reef in Alaska’s Prince William Sound, causing 11 million gallons of oil to...

1937: President Roosevelt Proposes “Court-Packing” Plan

On February 5, 1937, President Franklin D. Roosevelt presented Congress with legislation intended to manufacture Supreme Court approval for his New Deal. “Court-Packing” Bill Fails...

On This Day: President Nixon Resigns

On Aug. 8, 1974, President Richard Nixon, facing impeachment charges for his role in the Watergate Hotel break-in, announced his resignation. The Watergate Scandal At 2:30...

1962: Cuban Missile Crisis Begins

On Oct. 14, 1962, a United States spy plane spotted missile bases under construction in Cuba, touching off the two-week Cuban Missile Crisis. Two Weeks...

1981: John Hinckley Shoots President Reagan and James Brady

On March 30, 1981, President Ronald Reagan was shot in the chest by John Hinckley Jr., a college dropout hoping to impress actress Jodie...

1993: Car Bomb Explodes Beneath World Trade Center

On February 26, 1993, Islamic terrorists detonated a car bomb in the World Trade Center’s basement garage, killing six and injuring more than 1,000. Explosion...