These Tiny Frog Saunas Are Saving Endangered Green Tree Frogs!

Scientists have built cozy greenhouse "saunas" made of bricks and plastic to help green bell frogs fight off a deadly fungus. When the frogs get cold, they hop inside these warm shelters to heat up their bodies and cure themselves of the sickness. Who knew that a relaxing spa day could be a real-life superpower for saving endangered species?