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.

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

Scientists have revealed thepreserved embryos of a 200-million-year-old dinosaur species. Using a state-of-the-art particle accelerator, researchers were able to scan the fossils and create detailed ...

Two-headed snakes sound like a story out of mythology, but it rarely happens in nature. Read here to learn more about why this happens.

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

One of the biggest quests in biology is understanding how every cell in an animal's body carries an identical genome yet ...

Snakes have intrigued scientists for centuries. Studying these serpents has offered clues into their bodies, venom chemistry, ...

Scientists are studying Nectophrynoides frogs that give birth to live young. This unique reproductive method helps them ...

Fatty acids are not only important as energy sources, but also playing crucial roles in maintaining cellular homeostasis. However, their role in preimplantation development remains unclear. Here, we ...

Anacondas make up a group of constricting snakes that today includes the heaviest snake species in the world. Modern anacondas average 13 to 16 feet (4 to 5 meters) in length, though the largest can ...