Why are soccer balls black and white? What makes chewing gum chewy? Why do glowsticks glow?*How Cool is This? * is a fun-packed compendium of inventions and gizmos ranging from the great and the good to the obscure and offbeat. Each spread features a single brilliant invention, using a colorful graphic approach to explain in an intuitive, visual style how the object works. Simple and engaging text reveals the secret science behind the invention and tells the amazing stories of the inventions that changed the world forever.ContentsFrisbeeChewing gumChinese lanternGlowsticks3-D filmsIce cream makerKite surfingRingpullSoapCrystal treesFolding plugHeat-sensitive paintAirbagWind turbineLava lampGPSZip fastenerOLED screenPencilHalfpipePost-it notePaperclipScuba scooterNight visionCrash helmetDynamo torchPaintball gunSpace toiletCottonSafety glassBullet-proof vestMatchesFireworksIllusionsEtch-a-sketchGlassVertical farmingBraille cameraStomp rocketSelk sleeping bagSugerglueClayMorse codeBarcodesDenimQWERTY keyboardLie detectorMan-made diamondCat litter robotAerobieAntibiotics