Recent progress in the fight against Aids shows that throwing money at problems can work

Molecular biologists can now tell us who is related to whom in the chain of life

We should spare his neighbours' cattle until we know how prions destroy the nervous system

The "Brave New World" brigade is worrying unnecessarily about human cloning

Patent laws were designed to protect actual inventions, not discoveries of natural phenomena. Patenting the human gene is challenging that rule. This is not in the public interest

For half a century the Big Bang theory has dominated attempts to explain the origin of the Universe. It is now being discredited by 16 billion year old stars. John Maddox explains the new crisis in cosmology