Data show that in 2010-2011, there were some 42 million internally displaced people in Asia alone, the majority victims of natural disasters including storms, droughts, and sea rise.But for cross-border migration driven by climate-related disasters, the legal landscape remains far murkier. Such migrants do not fall under the UN Convention for Refugees, for example, which only extends to those fleeing persecution on the basis of race, religion, ethnicity or political affiliation.