More than 70 people -- most of them schoolchildren, and all but a handful of them girls -- have now been affected by a mysterious ailment in an eastern district of Russia's war-torn republic of Chechnya. During the past week, residents have been struck by sudden bouts of tremors, nausea, and shortness of breath. Some doctors have reported incidents of psychotic episodes, with patients experiencing panic attacks or mania. Some regional authorities have said the illness is suggestive of nerve-gas poisoning. But toxicologists have reportedly found no evidence to substantiate the claim. RFE/RL reports on what may be behind Chechnya's...
