Most people think they know what origami is. It's this flapping birds, toys, cootie catchers, that sort of thing.

So we looked at the birds, and we tried to make a model that is powerful, ultralight, and it must have excellent aerodynamic qualities that would fly by its own and only by flapping its wings.

The one final bit of sparkle we'll put in at the very end here is an utterly impractical flight vehicle, which is a little ornithopter wing flapping device that rubber band powered that we'll show you.

Another time, when our path took us by a tranquil stream, I saw a man sitting and watching his line, seemingly at peace with the world, while next to him, fish he had already caught were flapping helplessly and gasping in the air.

Plenty of robots can fly but none can fly like a real bird. That is, until Markus Fischer and his team at Festo built SmartBird, a large, lightweight robot, modeled on a seagull, that flies by flapping its wings. A soaring demo fresh from TEDGlobal 2011.

Lack of stimulation often leads to self stimulating behaviors like hand flapping, rocking back and forth, or aggression, and in some institutions, psychiatric drugs are used to control the behavior of these children, whilst in others, children are tied up to prevent them from harming themselves or others.

For, in a complicated economic system that feeds back on itself in many ways, events that start a vicious cycle might be as seemingly trivial as the proverbial butterfly in the Amazon, which, by flapping its wings, sets off a chain of events that eventually results in a far away hurricane.

Under Napoleon I, the proportions were changed to make the stripes' width equal, but by a regulation dated 17 May 1853, the navy went back to using the 30 33 37 proportions, which it continues to use, as the flapping of the flag makes portions farther from the halyard seem smaller.