In June, the US opened a facility in Mexico to breed and release millions of sterile flies. It’s part of an effort to curb the spread of the New World screwworm, a flesh eating parasite that has spread through Central America and into southern Mexico. Host Marco Werman spoke to entomologist Phillip Kaufman at Texas A&M University when the facility was in the final stages of being built.

This story originally aired on Nov. 17, 2025.