Grunt

Grunt tackles the science behind some of a soldier's most challenging adversaries - panic, exhaustion, heat, noise - and introduces us to the scientists who seek to conquer them. Mary Roach dodges hostile fire with the U.S. Marine Corps Paintball Team as part of a study on hearing loss and survivability in combat and visits the fashion design studio of U.S. Army Natick Labs and learns why a zipper is a problem for a sniper. The curious science of humans at war - a New York Times bestseller.