Somalian refugees sit outside a "herio", a traditional Somali house, after being displaced from Bulla Punda village by floods in Garissa town, 390 km (242 miles) northeast of Kenya's capital Nairobi, in this November 20, 2006 file photo. People displaced by global warming -- the Christian Aid agency has predicted there will be one billion by 2050 -- could dwarf the nearly 10 million refugees and almost 25 million internally displaced people already fleeing wars and oppression. TO MATCH FEATURE REFUGEES-WORLD/
REUTERS/DAUD YUSSUF