Most natural diamonds have ages between 1 billion and 3.5 billion years. Diamond is the only gem with a single element. Do ...

Laughing gas is known for making people feel happy, relaxed, or giddy. It can make you feel giggly and less aware of pain.

A lead-acid battery is a type of rechargeable battery, invented in 1859. It uses lead plates (electrodes) submerged in ...