Richard Ashcroft: Another think coming

It's not easy deciding when someone is or isn't a person. John Crace meets the latest professor to try.

Body blow for medics

Medical students need corpses, so crisis looms as fewer of us are willing to hand over our last remains. Donald MacLeod reports.

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

Professor in drug study fraud claim

Psychiatrist says that he will fight charges of misconduct and defrauding the NHS.

NUS calls for better sexual health provision

Students to ask the public health minister to urgently tackle the growing rates of sexually transmitted infections in young people.