It’s night, and plant biologist Arthur Domingos de Melo is looking up at the open, ivory flowers of a tropical, hardwood tree. Though it’s the dry season in the arid, thorny Caatinga region of ...

In a surprising result, scientists have found that the insect-eating pallid bat is a more effective pollinator of cardon cactus flowers than a nectar-feeding specialist, the lesser long-nosed bat. Of ...