Monarch butterflies make one of the most extraordinary migrations in the natural world, often traveling thousands of miles across North America. Now, scientists are using new tracking technology to get a greater understanding of those journeys. Ali Rogin speaks with Dan Fagin, a Pulitzer Prize-winning journalist who teaches science journalism at New York University, to learn more. PBS News is supported by - https://www.pbs.org/newshour/about/funders. Hosted on Acast. See acast.com/privacy