On International Migrants Day, experts warn that forced migration linked to climate pressures is poised to become a problem worse than refugee flows.
Vast numbers of people who migrate in search of a better life end up living in marginal conditions that put their health at risk.
European Union to consider military action against traffickers over African migrant crisis - a first
If approved, it would be the first time EU governments use military force to fight illegal migration.
Natural wonder of the world under threat - from people.