Every ecosystem is shaped by billions of invisible battles: organisms competing for light, nutrients, space, or mates. These competitive interactions determine which species survive, how they evolve, ...

Patterns of morphological divergence across species’ ranges can provide insight into local adaptation and speciation. In this study, we compared phenotypic divergence among 4,221 crickets from 337 ...

There are no wild ligers. Indeed, hybrids were once thought to be rare in nature—and of little consequence in an evolutionary sense. But now we know they can play an important role in speciation—the ...

Juvenile bonobo embraces a distressed companion during post-conflict consolation. Psychologists from Durham University, UK, observed the behaviour of 90 sanctuary-living apes to establish whether ...

For over 200 years, there has been just one species of giraffe, Giraffa camelopardalis. This unmistakable African animal is ...