A Florida public school told students in May that boys were better described as “people with a penis” and girls as “people with a vulva,” according to a report. P.K. Yonge Developmental Research ...

Sexual reproduction keeps many species alive. In humans, male and female reproductive systems look very different, though. The female reproductive system has many unique parts, including the ovaries, ...

Researchers have recently identified and described a new genus and species of xanthid crab found in Okinawa Island, Ryukyu Islands, Japan. Named Mabui calculus, it is the first among the 7,800 species ...

Every few years, a new study appears sounding an alarm about dropping sperm counts, cuing sensational headlines about the end of men and scholarly concerns about the robustness of the data. Yet amid ...

Scientists published a full genetic sequence of the genes that make some white campions male, and hope their work could unlock how the flower got that way. By Veronique Greenwood The vast majority of ...