More from Andy Coghlan
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Health
Pig organs: Ready for humans at last?
News
Graffiti and litter lead to more street crime
News
Health
Woman receives windpipe built from her stem cells
News
Health
HIV ‘cure’ won’t save sick millions
Opinion
Obama moves swiftly to repair stem cell damage
News
Health
Obama plans to sweep Bush stem-cell restrictions aside
News
Health
Virus accomplice helps drugs fight cancer
News
Earth
GM cotton in the clear over farmer suicides
News
Earth
Fungal diesel could revolutionise fuel production
News
Earth
Humans to blame for polar warming
News
Humans
Men have a sharper eye for a love cheat
News
Life
When does human life begin?
News