“While the human penis functions primarily to transfer sperm, our result suggests its unusual large size evolved as a sexual ornament to attract females rather than purely as a badge of status to ...

Add Yahoo as a preferred source to see more of our stories on Google. a school age girl with dark brown skin presents a simplified diagram of the human body to a teacher. the diagram depicts various ...

Biological sex is usually described in simple binary terms: male or female. This works well for germ cells (sperm versus eggs), but for other body organs it is of little help. A new study by the Max ...

Zygote Body is a comprehensive and unique way to learn about the human body. The human body is fascinating and complex. Students puzzle over those different bones, blood vessels, muscles, and ...

Scientists said in a study published Tuesday that they may have stumbled on a previously unknown organ — one of the biggest in the human body and one that could significantly advance our understanding ...