In Pursuit of the Monarch’s Magnetic Sense

In Pursuit of the Monarch’s Magnetic Sense: The magnetic compass is the last unknown sense in migrating animals. For some scientists, the monarch butterfly is leading the way. By Alexa Robles-Gil Photographs and Video by Mark Felix In a storage shed beneath a cloudless Texas sky in November, Robin Grob performed open brain surgery on a monarch butterfly.Slips of tape held the butterfly’s