How do fish that can see make the switch to blind cavefish, and should that process really be called “evolution”? This transformation fascinates biologists. Picture the scene—a normal-looking fish lays normal-looking eggs, but its hatchlings look like something from science fiction. Thin, pale-pink skin covers not just their bodies but their shrunken eye sockets as well.
 

Pesticide companies used to sell concoctions of poison mixed with sugar in attempts to control cockroaches. The sugar would attract the insects and the poison would kill them. At least, that was the initial idea.

Charles Darwin bred many varieties of pigeons. Some had differently shaped head crests and others had unique color patterns in their plumage. Darwin tried to use these superficial examples of human-guided animal breeding to support his false idea that nature repeatedly transformed one basic life-form into another.