China sent synthetic human embryos to its space station this month, the first experiment of its kind. The goal is to determine whether one of the earliest stages of human development can withstand ...

China has sent artificially constructed human embryo models to the Tiangong space station, marking ...

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 ...

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 ...