It's been six years since Winston-Salem/Forsyth County Schools closed the Hanes-Lowrance middle school building after it was found to be sitting on top of a plume of toxic waste.
A mouse's brain clears out toxins during periods of deep sleep — including toxins that form the sticky plaques associated with Alzheimer's disease. Could the same hold true for people?
Jon Krakauer has long been haunted by how Christopher McCandless died in the Alaskan wilderness. In a scientific journal, he and a chemist show that the seeds McCandless consumed can contain a toxin.