How do you save an endangered species? Get the animals in the mood for love

Is it right to use cloning to save endangered animals?

Test your knowledge of the weird and wonderful world of animal reproduction

Watch a short version of the programme

Using IVF to help arrest the decline of rare species

The search for alien life is 50 years old, but a planet has been discovered that could support life.

Prof. Regan tests the scientific claims of supermarket products

A few isolated communities seem to hold the secrets to long life.

Lifting the lid on the business of human choices in an exclusive guide to making better decisions.