Researchers studied how a parasitic fungus called Pochonia chlamydosporia infects and destroys the eggs of harmful parasitic worms found in horses. Using advanced imaging and protein analysis, they discovered that the fungus uses different strategies at different stages of infection: first it attaches and creates damage, then it breaks down the egg shell, and finally it consumes the contents. This fungus could be used as a natural, eco-friendly solution to control parasitic worm infections in animals.