"These 52 Fun Facts Playing Cards are filled with wacky, wild and mind-bending facts about everything on Earth and beyond! Using images from National Geographic’s legendary photographic image collection and 52 facts from its best-selling Weird But True books, this entertaining pack can also be used as a regular deck of playing cards. Family and friends will be astounded by trivia about animals, food, science, outer space, geography, weather and more! Did you know that astronauts can’t whistle on the moon? © 2015 National Geographic Society NATIONAL GEOGRAPHIC KIDS and Yellow Border Design are trademarks of the National Geographic Society, used under license. All rights reserved. "