The Amazing Filthy Fly

I hate flies. They are annoying, and so hard to hit unless you have a good fly-swat and a very fast hand. But as much as I hate the fly, I marvel at how incredibly well it is made, from its amazing compound eyes that can see the slightest movement, to its tiny brain that is connected to the eyes and tells the fly to move because it is in danger.

The common housefly is more complex than our most sophisticated air plane. It has a heart that pumps blood through its tiny veins, feet that have the...