TRENTO, Italy -- In a lush greenhouse high in the Alps, butterflies of various species and colors flutter freely while butterfly pupae are suspended in a structure as they grow into adult insects.

Nature, it seems, strategizes so species survive. That’s why a caterpillar crawling amid greenery turns into a green pupa, blending into its surroundings and lessening the chance a bird will make it ...

I talked about your question with my friend Allan Felsot. He’s an insect scientist at Washington State University. He told me cocoons are mostly silk. But they’re usually made by moths. A butterfly ...

We know about migrating species of butterflies, but they don't all fly south for the winter. Several overwinter in their home habitat and could use your help.