FILE - In this Aug. 7, 2011 file photo, Somali refugees herd their goats at the Ifo refugee camp outside Dadaab, eastern Kenya, 100 kilometers (62 miles) from the Somali border. Human-induced climate change contributed to low rain levels in East Africa in 2011, making global warming one of the causes of Somalia's famine and the tens of thousands of deaths that followed, a new study has found. (AP Photo/Jerome Delay, File)
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