This month, at the International Association of Amusement Parks and Attractions Convention, a team of three men broke the record for the the tallest stack of Guinness World Records books in one minute.
Ali Behnam (UK), Oliver Goyeneche (Germany) and Yan Dong (China) achieved a height of 1.97 meters (6 feet, 5.55 inches).
As two of the successful teammates were engineers, they studied together, evaluating scientific methods to stack the books.
They managed to get the record after one failed attempt.
The record was attempted at the Ripley's booth in the Hong Kong Convention and Exhibition Centre in Hong Kong SAR, China.