On this day, June 30

1859 Niagara Falls Tightrope Walk

Jun 30, 1859

1859
French acrobat Charles Blondin, AKA Jean Francois Gravelet, walked across Niagara Falls on a tightrope.

BOOM!

Jun 30, 1908

1908 An asteroid exploded above Tunguska in Siberia, leaving 800 square miles of scorched or blown-down trees, Flattening hundreds of square miles of forest and resulting in tremors that could be felt hundreds of miles away.

"Frankly my dear...."

Jun 30, 1936

1936
Margaret Mitchell's Gone with the Wind was published.

Voting Age

Jun 30, 1971

1971

The 26th Amendment to the Constitution, lowering the minimum voting age to 18, was ratified as Ohio became the 38th state to approve it.

Tomb of the Unknown Soldier

Jun 30, 1998

1998
The remains of a Vietnam War serviceman buried in the Tomb of the Unknown Soldiers were identified as those of Air Force pilot Michael J. Blassie.