In a greenhouse in Tokyo, researcher Ko Mochizuki noticed something unusual. Flies were swarming around the delicate flowers ...

(Roy Toft / National Geographic Stock) Spider monkeys have complex behaviors that vary from group to group, according to a comparison of five isolated populations in Central America. In some groups ...

Weaver ants’ feet have an incredibly strong grip—individual members of one species can, without slipping, hold an entire dead bird hanging off the edge of a table. And the mighty insects rarely work ...