A mother's seven-year hunt for her son's killer
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.
Middle Eastern haven in the American south
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
The Islamic State group releases a video appearing to show militants killing a Kurdish man as a warning to forces fighting it in northern Iraq.
West African health ministers meeting in Ghana follow WHO advice and lift travel restrictions on countries affected by the Ebola outbreak.
A philanthropist couple have launched what they say is the world's first privately funded boat to help migrants in trouble at sea.
Previously confidential files reveal concerns by the Northern Ireland Office (NIO) to Margaret Thatcher's commitment to the Anglo Irish Agreement, two weeks before it was signed.
Hospitals in England will be expected to provide a higher standard of food under new rules being introduced by the government.
The museum 'ignoring' its Salvador Dali etchings
Google reveals it has built and tested its own drones as part of a plan to make automated deliveries to remote homes as well as disaster-hit zones.
Hundreds of people have descended on Folkestone beach in a bid to get their hands on a share of buried gold worth £10,000.
Russia responds to a Canadian geography lesson
A study of genetic sequences sheds new light on the colonisation of the North American Arctic, from ancient "Paleo-Eskimos" to the modern-day Inuit.
Nigeria's President Goodluck Jonathan formally launches a national electronic identity card, which can also be used to make payments.
Scientists have tracked the spread of Ebola in West Africa, revealing genetic clues to the course of the outbreak.
Nato releases satellite images which it says show Russian forces inside Ukraine to help rebels fight government troops - a claim Russia denies.