Neutralise radiation and stay off milk: the truth about celebrity health claims

A new leaflet aimed at famous people debunks unscientific comments. By James Randerson.

Scientists on a mission to bring cheap drugs to the world’s poorest countries

· Indian trials for low cost hepatitis C treatment · Researchers pioneer 'ethical pharmaceuticals'

Stem cell bank to begin supplying researchers

· Pioneering UK facility to release embryonic cells · Centre offers hope of medical breakthroughs

Key to future stem cell production may lie inside the testicles

· Tissue is rich in formative cells, British scientists say · New source would avoid need to destroy embryos