"How Do They Do ALL That?: Wonders of the Modern World Explained"
"The New World Order", by Ben Jeapes
"Oddballs and Eccentrics"
"Conrad's Fate", by Diana Wynne Jones
"The Book of Answers"
"The Little Book of Science"
"The Hitchhiker's Guide to the Galaxy", by Douglas Adams
Woulda been more, but I didn't have enough money. Everything except Hitchhiker's were hardcover.