From frozen Alaska to the lab: a virus 39,000 times more virulent than flu

· Tight security to prevent 'select agent' escaping · Publication of its genetic code raises fears of misuse

Researchers inflict pain in hope of easing suffering

· Subjects volunteer for shock and heat ordeals · Study could help diabetes and shingles sufferers

Hospital awards

Linda Nordling: The NHS is changing the way it treats scientific ideas.