In what organizers called an “unexpected incident,” a cyclist in the El Tour de Tucson came face-to-face with one of the ...

From venomous predators to surprise attacks, these real-life desert encounters reveal the wild side of survival.

Colorful lichen living on dinosaur bones reflect infrared light that can be detected by drones, which might lead to finds in remote areas.

Some things happen slowly, and then all at once. We had been following this leopard over four long, painstaking nights, and ...