A high-tech fly factory on the U.S.–Mexico border is racing to stop a flesh‑eating parasite, while ranchers warn federal science may be moving slower than the screwworm itself. Story Snapshot
The United States and Mexico are expanding plants that breed sterile flies to crush New World screwworm. Trump’s USDA backs a Texas facility making up to 100 million sterile flies a week, plus a renovated plant in Mexico. Texas cattle leaders fear the pest…