ROME, Dec 17 (Thomson Reuters Foundation) - Half a million people in three West African nations rocked by Ebola are going hungry and that number could double by March if food supplies do not improve, two United Nations agencies warned on Wednesday. In Guinea, Liberia and Sierra Leone, the countries at the heart of the worst recorded outbreak of Ebola, workers have been staying away from markets and fields for fear of spreading the virus that has killed more than 6,800 people since March. This fear has caused labour shortages on farms for planting and weeding and cut household incomes, compounding an economic slowdown in these three countries. Border closures and quarantines are disrupting supply chains, hindering market access and exacerbating shortages, raising fears that one million people from a combined population of 20 million could be going hungry by March. More via Scientific American.