When Mexican free-tailed bats emerge from Bracken Cave in Texas—home to over 15 million bats—they form spiraling columns that demonstrate mathematical properties of self-organized criticality. Within ...

Mother with baby, among others, Lesser Dog-faced Fruit Bat (Cyneropterus brachyotis). Also called Short-nosed or Common Fruit Bat. Animals hanging in the roof. Sungei Buloh Wetland Reserve, Singapore.