The savannas and grasslands of Africa support dozens of grazing herbivores, with enormous animals like rhinos and elephants living largely in peace alongside impalas and wildebeests. However, research ...

Texas has a wide variety of invasive species, from beaver-sized nutria rodents to the one inch zebra mussel. Invasive species can harm ecosystems and cost U.S. taxpayers $137 billion annually. Zebra ...