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Bean plants call for aerial reinforcements when caterpillars attack

NPR's Short Wave talks about a weakness in a well-known insect repellant, how plants call wasps to their defense and how bigger rewards speed up learning, in mice.

Copyright 2026 NPR

Hannah Chinn
Hannah Chinn (they/them) is a producer on NPR's science podcast Short Wave. Prior to joining Short Wave, they produced Good Luck Media's inaugural "climate thriller" podcast. Before that, they worked on Spotify & Gimlet Media shows such as Conviction, How to Save a Planet and Reply All. Previous pit stops also include WHYY, as well as Willamette Week and The Philadelphia Inquirer. In between, they've worked a number of non-journalism gigs at various vintage stores, coffee shops and haunted houses.
Regina G. Barber
Regina G. Barber is Short Wave's Scientist in Residence. She contributes original reporting on STEM and guest hosts the show.