Kathleen McAuliffe

To a surprising degree, our political beliefs may derive from a specific aspect of our biological makeup: our propensity to feel physical revulsion.

Jaroslav Flegr is no kook. And yet, for years, he suspected his mind had been taken over by parasites that had invaded his brain. So the prolific biologist took his science-fiction hunch into the lab. What he’s now discovering will startle you. Could tiny organisms carried by house cats be creeping into our brains, causing everything from car wrecks to schizophrenia?

Historians, sorting through a treasure trove of Edison's papers, are discovering revealing details that enrich our portrait of one of America's most accomplished inventors