Hundreds of people in Burkina Faso gather for a second day to demand the president step down immediately, after he says he will stay on for a year.
Japan's central bank, the Bank of Japan, surprises markets by announcing an expansion of its monetary stimulus policy.
The BBC's Divya Arya reports from India, where women of 60 and 70 are becoming mothers for the first time.
Within a few metres of you, almost certainly, a vampire is feeding
Could costly, painful injections soon be a thing of the past? Scientists are growing lettuce leaves that produce the vaccines for diseases such as malaria, cholera and polio.
How do you salvage an ugly argument that ends with a ring tossed into the river? Meet The Ring Finders: a group of metal detectorists who try to reunite people with lost jewellery.
Can't find it? Try the A to Z
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