Men assess potential rivals that have a larger penis as more of a threat, both physically and sexually, according to a study ...

An ancient DNA analysis of a 5,500-year-old human skeleton reveals that an ancestor of the bacterium that causes syphilis was ...

Ducks evolved reverse spirals and sperm storage that give females surprising control, challenging long-held assumptions about ...

The findings shed new light on human reproduction and suggest pathways for developing treatments to lower the risk of ...

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to ...

Casual acceptance of no-fault divorce many years ago not only altered the ecology of marriage but also of anthropology itself ...

Animals caught acting like humans in hilarious ways. FA9LA rapper Flipperachi says Akshaye Khanna and Dhurandhar changed his life dramatically, 'The film has done incredibly well globally' Kittur Rani ...

Elon Musk has touted Grok, the AI chatbot built into his social network X, as “maximally truth-seeking” and “the smartest AI in the world.” This week, X users found that Grok seemed to think just as ...

In 2018, Chinese scientist He Jiankui shocked the world when he revealed that he had created the first gene-edited babies. Using Crispr, he tweaked the genes of three human embryos in an attempt to ...

Off a quiet hallway on the top floor of a building at the University of Osaka in Japan, Katsuhiko Hayashi is hatching a revolution. Human embryo science: can the world’s regulators keep pace? He is on ...

Scientists have created human eggs containing genes from adult skin cells, a step that someday could help women who are infertile or gay couples have babies with their own genes but would also raise ...