We track four people on their journey.
Why Iraqi refugees abandon Europe and return home
12 Dec 2011 14:12 GMT
A gold miner more than a kilometre down a 400-year-old shaft at Marmoto, Colombia, a few hours from Medellin [Josh Rushing]
Miners inside a 400-year-old mineshaft at Marmato [Josh Rushing]
An Afro-Colombian woman works in a mine in Mondomo [Josh Rushing]
A bucket of earth, in search of flecks of gold [Josh Rushing]
Modern mining with large machines coexists with the oldest form of mining - humans clawing through the mud - in Mondomo [Josh Rushing]
Gigantic brown holes scar the mountainside in Mondomo; environmental destruction associated with mining is on the rise across the country [Josh Rushing]
Miners in Mondomo are poisoning the town(***)s water according to the local mayor of Santander de Quilichao [Josh Rushing]
A miner at Mondomo mining site [Josh Rushing]
A child miner looks over the damage at the Mondomo mining site [Josh Rushing]
A child miner at work [Josh Rushing]
Transport apps are revolutionising commutes for the middle classes, but poorer citizens still face daily gridlock.
Poverty & Development, Asia, India
Cubans get amnesty at the US border, but reaching it involves a risky journey along the Central American migrant trail.
Human Rights, Latin America, Cuba
In many ways, Michael is just like any other 11-year-old, but he has had four open heart surgeries.
Health, US & Canada
Follow a dancer through the exhaustion and jubilation of Peru's days-long Virgin of Candelaria festival.
Arts & Culture, Latin America, Peru
We travel to Chile to meet a group of young scientists determined to develop smart plant-based food to save the planet.
Science & Technology, Chile, Food
We follow the journey of a plastic bottle to find out what it takes to truly recycle the product creating zero waste.
Science & Technology, US & Canada, Environment
A couple working to protect LA communities from gang violence is caught in the crossfire of the US war on gangs.
Politics, Gang violence, US
South Koreans drink twice as much liquor as Russians, but is this national obsession with alcohol reversible?
Health, Asia, South Korea