Two unrelated groups of nectar eaters, hummingbirds and sunbirds, have evolved different techniques to slurp the sweet liquid ...

The Nature Record is the first national scientific assessment of the state of U.S. lands, rivers, coasts, and oceans, and ...

Unusually well-preserved fossils have provided the earliest known evidence of a land vertebrate that could pump air in and ...

If you trace the animal family tree back through the fossil record, the trail usually goes cold about 539 million years ago. Before this boundary—the start of the famous Cambrian explosion—multicelled ...

The practice began in 1920s Western variety shows and spread to city speakeasies, but it faces increased scrutiny today—and pressure from conservation groups to make races safer for the reptiles.

Tanyka amnicola is a newly identified ancient tetrapod known from unusual twisted jawbones adapted for grinding plants. This ...

Rare chimpanzee “civil war” reveals how social bonds collapse into violence, offering new insight into human conflict origins ...

Like with humans, it is not uncommon in the natural world for a group of animals to split apart and form their own independent groups. But what a new study in the journal Science depicts in the ...

Learn more about a mummy found in an Oklahoma cave that reveals clues about how early amniotes breathed.

Recently, scientists discovered a reptile fossil that provides the missing link between the transformation in the modes of ...

Some shark species might belong to their own distinct lineage, which is separate from all other sharks, rays and skates, ...

Direct survival benefits in larger groups rather than kin-selected indirect fitness primarily drive the evolution of division of labor in cooperatively breeding vertebrates, particularly under harsh ...