A zebra's stripes, a seashell's spirals, a butterfly's wings: these are all examples of patterns in nature. The formation of patterns is a puzzle for mathematicians and biologists alike. How does the ...

Did you know that Florida has a state butterfly? In 1996, Gov. Lawton Chiles designated the Zebra Longwing (Heliconius charitonius) as Florida’s official state butterfly. This butterfly is found in ...

I spotted a striped butterfly on a very cold day and wondered, how is that possible? I had the same thought when I marveled at one many years ago. The black-and-pale- yellow-striped Zebra Longwing ...