Every other Friday on Morning Edition, the Outside/In team answers a question from a listener about the natural world. “What happens inside a chrysalis during metamorphosis?” asked Chris, writing from ...

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 ...

Dear Dr. Universe, I saw a caterpillar and a butterfly in the neighbor’s yard. So my question is, what exactly happens inside the little sack they’re in while they transform into a butterfly and HOW ...

If you would like to learn more about the IAEA’s work, sign up for our weekly updates containing our most important news, multimedia and more. No one in the history of studying insects had ever ...