Have you ever wondered. * How an ATM verifies your identification and account information and dispenses cash in a matter of seconds? * What, if anything, is abl

“Interesting...Bowlin's calmly rational approach to the subject of conspiracy theories shows the importance of logic and evidence.”—Booklist "A page-turni

From the award-winning Web site visited by more than 2.5 million people every month comes the hardcover reference guide How Stuff Works. This book is a definiti

From the award-winning Web site visited by more than 2.5 million people every month comes How Stuff Works, the definitive guide to the inner workings of everyda

Does God exist? Using an intellectually rigorous, scientific approach, Marshall Brain--the founder of HowStuffWorks.com and author of the How Stuff Works series