The Water Puzzle: Facts About your drink water. Is a definitive guide to the Safe drinking water act. Printed for the average reader, it explains how the EPA came up with the regulations concerning the various contaminates, and what those contaminated could do. The book explains each facet of drinking water regulated, from the water supplied to your home, to the bottled water you purchase at the local grocery store.

This book is a sequel to The Water Puzzle: Facts about Your Drinking Water and zeros in on the aspect of securing a water supply from any possible situation or possible attack, showing every possible angle and how to safeguard any system.

"Humans are the only animals who create and solve puzzles--for the sheer pleasure of it--and there is no obvious genetic reason why we would do this. Marcel Danesi explores the psychology of puzzles and puzzling, with scores of classic examples. His pioneering book is both entertaining and enlightening." --Will Shortz, Crossword Editor, The New York Times "... Puzzle fanatics will enjoy the many riddles, illusions, cryptograms and other mind-benders offered for analysis." --Psychology Today "... a bristlingly clear... always intriguing survey of the history and rationale of puzzles.... A] splendid study...." --Knight Ridder Newspapers

Presents a collection of riddles, logic puzzles, anagrams, word puzzles, and other types of brain-teazers.

Discover the adventure and excitement of mathematical puzzles. Match your wits with the human computer. Sharpen your intellect, delight your friends and enjoy hours of purposeful entertainment. Mathematics is not always hard, mind-boggling stuff. It can also be simple, delightful and interesting. Many famous mathematicians are known to be devoted to peg jumping puzzles. It is perhaps this kind of play that leads to scientific discoveries. The celebrity author, Shakuntala Devi, is regarded as 'authentic heroine of the twentieth century'. She calculates faster than the fastest computer, is listed in the Guinness Book of World Records and continues to amaze audiences around the world with her feats of calculation.