Hannah Holmes is an American writer, journalist, essayist, and science commentator known for her engaging work on Science Live (Discovery Channel) and radio shows such as Maine Things Considered. She has published four books, with the most recent being Quirk: Brain Science Makes Sense of Your Peculiar Personality (Random House, 2011). Her articles have appeared in prestigious outlets like Sierra, New York Times Magazine, L.A. Times Magazine, Outside, Islands, and Escape. Holmes earned a B.A. from the University of Southern Maine in 1988 and resides in Portland, Maine, with her husband.