Lead scorer power calculated; and, maths problems raised in the Kercher murder case
BBC World Service Online
The story of the student who uncovered a mistake in a famous economic paper
Baroness Margaret Thatcher, who died aged 87, was Britain’s first female prime minister.
It's the 4th anniversary of the earthquake which devastated the city of L’Aquila in Italy.
What if a super-villain took control of the world’s gold and melted it into a cube?