The AK-47 is simple, inexpensive to manufacture and easy to clean and maintain. Its ruggedness and reliability are legendary. The large gas piston, generous clearances between moving parts, and tapered cartridge case design allow the gun to endure...
In the United States, Jeno Paulucci made Chinese food, under the Chun King label, available in supermarkets nationwide for the first time in 1947. He later brought out Jeno's pizza.
Our nails grow at 0.1 mm per day. It takes about three months to replace one entire fingernail.
Elephants communicate in sound waves below the frequency that humans can hear.
In 1845, the third Earl of Ross, a wealthy amateur astronomer, built the world's largest telescope on his Ireland estate. The earl's reflecting telescope had a 72-inch metal mirror, and was suspended between two ivy-covered stone walls.
A diamond will not dissolve in acid. The only thing that can destroy it is intense heat.