Humans and most other organisms have internal biological clocks that track the daily cycle of sunrise and sunset. These ...

Statistics show clear differences in the population's immune system according to sex: men are more susceptible to infections ...

Scientists discovered that making a very small change to female mice's DNA caused them to develop male reproductive organs.

Our bodies are not perfectly designed, but are a living archive of evolution. Anatomy reveals a historical record of ...

Just because a female olive baboon has mated with a specific male doesn't mean he will be the father of her offspring.

Researchers constructed a labyrinth at Adelaide University. It's not big; rather, it's made to fit under a microscope, with ...