Climate Home: Food aid will run out for over 10 million Ethiopians by May, according to aid agencies, which fear a repeat of the horrendous famines of the 1970s and 80s. Chronic drought has sapped vast tracts of the north, central and eastern highlands, hitting crops and livestock as rain patterns have shifted. More than eight in ten people depend on rain-fed agriculture, according to Oxfam. Intensified by El Nino, the dry spell brings into sharp relief the vulnerability of the continent to a changing climate....