ArcaMax

Knowledge

on Feb 8, 2026

Just Hot Air
Nitrogen
Hydrogen
Helium

Hydrogen. Hindenburg was planned to run on helium, but because of the U.S. export ban, flammable hydrogen was chosen instead.

History Trivia / March 19, 2026

Bell Tower. In 1999, the Leaning Tower of Pisa was straightened by 16 inches to keep it from falling over completely.

History Trivia / March 19, 2026

Saint Petersburg. A wooden cabin built for Peter I in 1703 was the first residence constructed in St. Petersburg.

History Trivia / March 18, 2026

Communist. The Soviet Union was founded in 1922.

History Trivia / March 18, 2026

Nelson Mandela. De Klerk released Nelson Mandela from prison in South Africa.

History Trivia / March 17, 2026

Alessandro Volta. The term "volt" was also named for Count Alessandro Volta.

History Trivia / March 17, 2026

20. Sixteen wooden lifeboats and four collapsible Engelhardt boats were onboard the Titanic.