This chapter analysis suggests climate change may well intensify environmental migration and conflict in receiving areas. It embeds migration decision making within a system model shown in, in which conflict is both cause and effect of environmental migration. The chapter briefly discuss the other channels in studies observe that population displacements can promote environmental damage, particularly in LDCs. It deals with the regional distribution of global environmental change from several salient aspects of cumulative environmental degradation and hydrometeorological natural disasters. The chapter presents two cases of environmental migration and compares them to the case of the Hurricane Katrina in the Unites States. The chapter develops a quasi-experimental research design in order to assess empirically the prevalence of these effects in the real world. As in El Salvador and Honduras, the colonial period had left behind in the Phillippines a highly skewed cropland distribution in the fertile lowlands, which were fully cultivated.