Youtuber Stumbles Upon Secret Underground City In Manchester and Runs Out in Terror

The More You Know

• A team of six women programmed the first digital computer.
• Earth is 4.54 billion years old.
• There's a shrimp-like creature that makes aluminum armor to protect itself.
• During World War 2, a bear named Wotjek joined the Polish army. He carried ammunition and occasionally drank beer.