Why Scientists Are Performing Brain Surgery on Monarchs

new video loaded: Why Scientists Are Performing Brain Surgery on MonarchsScientists in Texas are studying monarch butterflies to understand how they navigate thousands of miles, possibly by sensing Earth’s magnetic field. Alexa Robles-Gil explains how researchers are examining the butterflies’ brains to find answers.By Alexa Robles-Gil, Leila Medina, Joey Sendaydiego and Mark FelixDecember 23, 2025