The endangered kakapo is a flightless bird native to New Zealand. Its population is growing, but its parasites have dwindled.

CINTALAPA, Mexico (AP) — With Mexican cattle again barred this month from entry to the United States over fears of spreading ...

Ranchers in southern Mexico face rising costs and limited government help to battle a flesh-eating parasite infecting ...

In the southern state of Chiapas, which borders Guatemala, the New World screwworm fly's rapid spread appears to have caught ...