What Made Chili Peppers So Spicy?

New research indicates chili pepper plants may have developed their signature heat as a way to fight off fungal infections caused by insects.


Joshua Tewksbury, assistant professor of biology at the University of Washington



Please keep your community civil. All comments must follow the NPR.org Community rules and Terms of Use. NPR reserves the right to use the comments we receive, in whole or in part, and to use the commenter's name and location, in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.