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National Science Foundation

Chemistry Now: Chemistry of Fear and Fright

Chemistry of Fear and Fright--Are you arachnophobic? Acrophobic? Ophidiophobic? This video explains how two hormones, adrenaline and cortisol, work to trigger a cascade of "fight or flight" fear responses when you're confronted by a spider, a great height or a snake.

Credit: NBC Learn and the National Science Foundation (NSF)


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