How do scientists know which insects can see color? Illustration by Roche How do scientists know which insects can see color? John Jay Rouse | St. Cloud, Minnesota Much of what we know about ...

Yes, there are in fact strawberries in there, but they're there for flavor and texture, not color. That bright red comes from something else called carmine. Oh, and it's made from squashed bugs.

Understanding the material basis of adaptive evolution has been a central goal in biology dating back to at least the time of ...