What new techniques can reliably establish our identities?
Previously confidential files reveal concerns over Margaret Thatcher's commitment to the Anglo Irish Agreement, two weeks before it was signed.
Electromagnetic stimulation of a specific part of the brain may improve the ability to remember certain facts, researchers say.
A study of smokers in Australia suggests there is "no evidence" that the introduction of standardised cigarette packaging has changed the way people buy cigarettes.
The Ebola journey no-one in Ivory Coast wants to take
Recession drives new wave of prospectors into the wild
The millionaires who rescue people at sea