We track four people on their journey.
What's the cost of South Korea's drinking culture?
DNA has become a sacred entity - the modern equivalent of the Christian soul, an individual's essence, writes Dickenson.
12 May 2013 11:24 GMT | Health, US & Canada, United States
Sixty years ago, US medical researchers intentionally infected hundreds of people in Guatemala with syphilis.
06 Nov 2011 10:17 GMT | Health, US & Canada, Latin America, Guatemala, Niger
As egg sales, IVF and surrogacy become more common and commercial, a conflict arises between social justice and profit.
30 May 2011 15:44 GMT | US & Canada, France, India, Spain, United Kingdom
South Koreans drink twice as much liquor as Russians, but is this national obsession with alcohol reversible?
Health, Asia, South Korea
How improving relations between communist Cuba and the capitalist US will change the lives of people on both sides.
Politics, United States, Cuba
Mayotte is a magnet for Comoros islanders who risk their lives crossing hazardous seas in search of a better life.
Poverty & Development, France, Refugees
A three-part series looking at the history of France's black community and their long struggle for recognition.
Politics, US & Canada, France