Russia tried to dig a hole through the Earth’s crust in the 1970’s. They reached 40,318 feet deep before they stopped. It is still the deepest hole humans have ever dug.
The Deepest Hole
400
The Name Jessica
294
William Shakespeare invented the name Jessica.
Mickey and Minnie Mouse Got Married
325
The voices of Mickey and Minnie Mouse got married in real life.
Blue Whale Heartbeat
346
You can hear a blue whale’s heartbeat from more than two miles away.
Zheng Yi Sao
463
The most successful pirate was a woman named Zheng Yi Sao. Her fleet was composed of 400 junks and between 40,000 to 60,000 pirates in 1805.