Are you lactose intolerant? Many people are. In fact, the ability to digest lactose may be an example of adaptive evolution in the human lineage. Although the study of natural selection in humans is ...

Nestled in the nether regions of the nasal passage is a little-known organ that sees a lot of use in other animals but seems ...

Natural selection is an important evolutionary force that enables humans to adapt to new environments and fight disease-causing pathogens. However, the unique footprints of natural selection in our ...

Scientists uncover fossils suggesting Sahelanthropus tchadensis, a 7-million-year-old ancestor, could walk upright. Could this tiny bipedal ape-like hominin rewrite what we know about the earliest ...

It's true. The climate is always changing. But this refrain from the climate denial camp — as if to argue that the existence of natural cycles of atmospheric variability somehow means that humans ...

Hedonic adaptation explains why happiness levels remain stable despite life changes, as our brains normalize extraordinary ...

The authors do not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and have disclosed no relevant affiliations beyond their ...

The Indigenous peoples of the Bolivian highlands are survivors. For thousands of years they have lived at altitudes of more than two miles, where oxygen is about 35 percent lower than at sea level.

Africa is at a tipping point. With projected temperature rises higher than the rest of the world and an increase in the occurrence of droughts, floods and other natural disasters – the people, economy ...