Why some male anglerfish parasitically fuse with females

Reproduction is central to the survival of all living organisms. Over millions of years, animal species on Earth have evolved a remarkable variety of mating strategies, ranging from physical fights with competitors to mesmerizing ...

Decades-old theory for how insect societies evolve challenged

For more than 60 years, evolutionary biologists have debated whether a unique genetic system found in ants, bees and wasps helps explain one of nature's most remarkable innovations: eusociality, a form of social organization ...

Aquarium sends shark eggs to bolster wild populations

Shedd Aquarium has sent four zebra shark eggs to contribute to a conservation effort for the endangered species, marking the Chicago nonprofit's first delivery to Raja Ampat, Indonesia. As a founding partner of ReShark, Shedd ...

How flying together helps Andean condors save energy

Animals are constantly moving to find food, water, suitable habitats, mates and safe places to rest. Because moving requires substantial energy, animals often rely on various biological and behavioral strategies to reduce ...

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