We Can Now Track Individual Monarch Butterflies. It’s a Revelation.

Monarch butterfly with radio tag attached
A monarch butterfly carrying a tiny tag developed by Cellular Tracking Technologies at the Cape May Point Arts and Science Center in New Jersey, which helped fund a monarch tagging project. (Screengrab from video by Hannah Beier)

Mon, 11/17/2025

author

Dan Fagin, The New York Times

Scientists used tiny new sensors to follow the insects on journeys that take thousands of miles to their winter colonies in Mexico. See the full story from The New York Times.

Mon, 11/17/2025

author

Dan Fagin, The New York Times