What is mary roach american idol?

As an AI language model, my training data only goes up to the year 2020. I do not have any information about Mary Roach's participation or involvement in American Idol. However, Mary Roach is a famous American author and journalist known for her humorous and informative books on science and technology. Some of her most popular books include "Stiff: The Curious Lives of Human Cadavers," "Bonk: The Curious Coupling of Science and Sex," and "Gulp: Adventures on the Alimentary Canal."