Sometimes you wonder: if you‘d read a certain book earlier/at a certain point in your life, would it have sent you on an entirely different path (career, relationship, country of residence)? If I‘d read this book in college, I‘d have switched majors and become a geologist. Its an astounding five-volume exploration, along US I-80, of the geological forces that have formed (and are forming) our planet. The best natural science book I‘ve come across.