13:46 UK time, Wednesday, 4 December 2013
A 28-year-old woman has begun a legal bid to prevent her dead husband's frozen sperm from being destroyed.
Though at first muted in his approach to HIV/Aids, Nelson Mandela became a dedicated advocate for a more vigorous approach to the disease.
Scientists have cast doubt on the value of vitamin D supplements to protect against diseases like cancers and diabetes.
How singing can help a chronic lung condition
Why all kinds of infections thrive in conflict zones
A month on from Typhoon Haiyan, healthcare is being restored
Why do people troll themselves online?
Is how long you'll live simply down to your postcode?
How dangerous is 'highway hypnosis'?
Future challenges in the fight against HIV/Aids
Why do public figures choose not to reveal they are ill?
The Cambodian countryside features in the best travel images of the week
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