Hard To Believe -

: Human stomach acid is strong enough to dissolve a single-edged razor blade in about two hours.

: On Jupiter and Saturn, the intense pressure and heat in the atmosphere can squeeze carbon into diamonds, which then literally rain down toward the planet's core. Hard To Believe

: In a 22-year window (1843–1865), it was theoretically possible for a Japanese samurai to send a fax to Abraham Lincoln . : Human stomach acid is strong enough to

: Cleopatra lived closer to the invention of the iPhone and the first moon landing than she did to the construction of the Great Pyramids. Hard To Believe

: Sharks have been on Earth for over 400 million years, meaning they are older than trees and even the North Star.