There's a monster out there. It's huge, powerful, and it's been around forever. It can destroy a human being in hundreds of different ways. It's energy! Energy can make some very interesting things happen, and it's stored up all around us. It's in the tiny sea creatures that died hundreds of millions of years ago and eventually became oil. It's in the guillotine that slides down and chops your head off. And you'll need lots of energy if you plan to fire your teacher from a cannon. Even the lack of energy can be fun-it's how a British scientist once made ice cream in 10 seconds.