Necks-for-sex, or Necks-for-food? Why are giraffe necks so long?

Why has it been so hard for scientists to explain why giraffes (Giraffa camelopardalis) have such long necks? After all it has been almost 140 years since Charles Darwin proposed that competition for food among African browsers led to Read More...

Marsupial radiations revealed

Living metatherians exist in two strongholds: the Neotropics (Mexico, Central America, and South America) and the Australasian region (Australia, Tasmania, New Guinea, and nearby islands). One hypothesis to explain this odd distribution proposes that metatherians Read More...

Echolocation or flight first?

The debate continues; did echolocation or flight evolve first in bats? The discovery of a beautifully preserved Eocene bat Onychonycteris finneyi led researchers to conclude that it lacked the morphology of the stylohyal bone (a part of the laryngeal apparatus) necessary for Read More...