1) The Cuban Missile Crisis in 1962 brought the United States and the Soviet Union to the brink of nuclear war during the Cold War.

2) The Eiffel Tower can be 15 cm taller during the summer due to thermal expansion.

3) The world's first speeding ticket was issued in 1902 to a motorist who was driving at the astonishing speed of 45 miles per hour (72 km/h).

4) The smallest unit of time is known as a zeptosecond, which is equal to one trillionth of one billionth of a second.