Snappy solution to a serious shortage Scientists are one step closer to making synthetic human blood - thanks to the amazing properties of crocodile haemoglobin. Emma Young reports.
So you thought you were safe at home … If the dust mites don't get you, the phthalates or geopathic stress lines might, says Ros Weaver.
Is this the future of medicine? Christopher Reeve believed it was. Ian Sample looks at the brave new world of stem cell research.