A woman’s routine ultrasound reveals a shocking growth inside her body—hair, teeth, and more—raising questions about dermoid ...

At first glance, it looks like the start of a human pregnancy: A ball-shaped embryo presses gently into the receptive lining ...

Scientists have developed an experimental way to study how human embryos implant in a uterus, which may provide new insights into why miscarriages occur and how they can be prevented.

A new study shows embryos and the uterus exchange extracellular vesicles, lipids, and signals that shape early pregnancy ...

Seals give birth only when conditions are right. After mating, a female seal can delay implantation of the embryo in the ...

Who is the Father of Biology? Discover the life and legacy of Aristotle, the ancient Greek genius who first classified living ...