I'm a civil and structural engineer who has designed and built all kinds of buildings, bridges, and tunnels around the world. Of them all, my most memorable was bringing an historic lighthouse out of harm's way and into safety while guarding an eroding bluff on Cape Cod National Seashore. Readers will find that my book, "Saving Michelangelo's Dome," features a similar sense of drama, daring, and uncertainty -- as well as a colorful cast of characters -- which make the world of construction so compelling.