Everyday we use hundreds of simple and complicated machines in our homes, at work and in school. From hybrid cars and smartphones, to the Green Line train on Commonwealth Avenue, our lives are transformed by some ancient and modern feats of engineering.
But how does it all work?
That's the question at the heart of David Macaulay's best-selling 1988 illustrated book "The Way Things Work." Generations of children have flipped through the hundreds of colorful pages of Macaulay's work, following along as curious wholly mammoths learn how ramps, lasers and cars function.
A lot has changed since 1988, and the Vermont-based Macaulay's third version of his book is now out. It's called "The Way Things Work Now."
This segment aired on October 14, 2016.