We track four people on their journey.
Zika virus: 'We have more questions than answers'
Meet the tribe using the internet to tackle the logging mafias targeting their villages.
13 Mar 2012 14:54 GMT
Environment, Latin America, Brazil, France, Peru
10 Mar 2012 21:17 GMT
08 Mar 2012 11:10 GMT
05 Mar 2012 13:23 GMT
05 Mar 2012 13:16 GMT
05 Mar 2012 09:44 GMT
02 Mar 2012 17:23 GMT
02 Mar 2012 17:12 GMT
01 Mar 2012 15:15 GMT
Activist Maryam al-Khawaja in debate with Mansoor al-Arayedh, the chairman of the Gulf Council for Foreign Relations.
Human Rights, Bahrain, Arab Spring
As the WHO investigates the massive outbreak of microcephaly in Brazil, we travel to ground zero of the epidemic.
Health, Latin America, Brazil
Hundreds of Cambodian journalists make a living by uncovering news and then extorting bribes to bury the story.
Media, Journalism, Cambodia
How will improving relations between communist Cuba and the capitalist US affect the lives of people on both sides?
Politics, United States, Cuba