I went back and forth on my feelings about Mr. Watkins' writing: sometimes his chewy carping was amusing and pointed, and other times he seemed like he was taking a world-weary tough-guy dangling cigarette tone just for effect. I ended up prejudiced about his doomsayer's attitude (even though he seemed accurate about environmental challenges and peoples' tendency to muck things up, even in 1970), so the middling star rating.
The images are good though, particularly of the way-out-west scenes; the cityscapes felt less inspired.