This guide covers the entire history of weapons, from the earliest, most primitive instruments up to remarkable advances in modern defense and warfare. Comprehensively illustrated, with diagrams, charts, photographs, and much more.
They're challenging, baffling, and wildly entertaining: here are 240 colorful, mind-boggling puzzles of every kind to sharpen anyone's thinking skills! Vivid optical illusions fool and tease the eye: try to find both a young girl and her grandmother in what seems to be a picture of only one woman. Or test those smarts on a different type of visual problem by figuring out which of six pieces isn't needed to make a cube. Sneaky lateral thinking puzzles are so tricky that there are extra clues to help: look at them first and then solve the riddle of why a tourist in London wouldn't ride the escalator in the subway station--even though he wanted to. It takes really creative reasoning to solve clever logic conundrums, including mathematical enigmas from the "addled arithmetician" and mini-mysteries to delight the armchair detective. And lots more stimulating fun!
A collection of 500 optical illusions that brims with the best eye tricks and visual oddities. It challenges you to try and figure out how many legs the happy hippo has; what's weird about a very unusual building; why a page with wiggly, wavy lines can make you seasick and more.
This brilliant activity book of imagination from the mind of Keith Haring is for the little Nina in all of us... jam-packed with activities for hours of entertainment.