This book has short descriptions about 'how they do that'. Examples, how do they shell peanuts without breaking them?, how do fireflies flash?, how do neon signs glow?, and the greatest mystery of all, how do they get the stripes onto toothpaste?
About 150 one-to-two page explanations. Given that the book is 25 years old, a few may be out of date ("How do they sort mail?", "How do they predict a path of a hurricane?", "How do they measure the speed of a fastball?"), but some may have more lasting answers ("How do neon signs glow? How do glasses correct nearsightedness or farsightedness? "How do they predict solar eclipses?")