The trials sperm face getting to the egg.

What are human eggs and how are they released?

Find out why the egg and sperm have to race against time to begin a new life.

After nine months of pregnancy, how does the body prepare for and endure labour?

What is the placenta and what does it do?

How IVF treatment works.

The discovery of ultrasound and how it works.

The fight for nutrition between a mother and her unborn child.

Baby elephants can walk at birth; why can't we?

See what happens at each stage of pregnancy.