Researchers have found evidence of horseback riding in skeletal remains of people who lived about 5,000 years ago, adding to a body of research on when people first started using horses to get around.

New research points to a surprising way to stop spillovers of Hendra virus, which is harbored by bats. It's not often that it jumps to horses, then humans, but when it does, the result are brutal.

William Simpson wants to deploy the wild horses across public lands, to live and graze — and ultimately, prevent the worst wildfires.