Human reproduction exhibits marked temporal variation, with birth rates and conception outcomes fluctuating across the calendar year. These patterns arise from a complex interplay of environmental ...

Researchers have captured the very first real-time, three-dimensional images and videos of a human embryo implanting into synthetic uterine tissue—revealing a key stage in reproduction. The resulting ...

In 2016, two Japanese reproductive biologists, Katsuhiko Hayashi and Mitinori Saitou, made an announcement in the journal Nature that read like a science-fiction novel. The researchers had taken skin ...

New research reveals the presence of microplastics in human reproductive fluids, raising important questions about their potential risks to fertility and reproductive health European Society of Human ...

Human reproductive cloning is currently the subject of much debate around the world, involving a variety of ethical, religious, societal, scientific, and medical issues. This report from the National ...

A University of Michigan-led study based on a review of genetic and health information from more than 276,000 people finds strong support for a decades-old evolutionary theory that sought to explain ...