In Yellowstone National Park, wolves and other large carnivores are slowly but steadily bringing back balance to the ecosystem, particularly in herbivores and plants.

Six zebras wore video cameras attached to collars, capturing the equines’ daily life. Sticking with giraffes may let the two species protect each other.

Fossil of Ancient Animal With Long Limbs Discovered, Research Reveals There Were Ancestors of Horses A team of researchers ...