As cities expand and natural habitats shrink, more wild animals are showing up in unexpected places—from mountain lions stalking backyards to bears rummaging through garbage bins. Experts say urban ...

By late February, a 6-year-old unvaccinated girl died of measles-related pneumonia — the first U.S. measles death since 2015 ...

Get an up-close look at one of Africa's deadliest back-fanged tree snakes in this thrilling video! Watch as we explore the dangerous beauty of this fascinating species and learn about its behavior, ...