OK, I haven't read the whole thing yet, but a few thoughts to share: First, it's a relief to know there's a growing group of people out there trying to form and spread awareness and solutions for an over-crowded (just with humans, and plastic...) planet. Second: they could have spared me the persuasive scare-facts, but I understand it's a textbook, they need to convert lots of students. Third: so far, everything I have read inside is very well explained, and the book is packed with approaches to thinking and reasoning which are new to me- and which may come in useful for those of us who wish to explain these things to others. Worth reading!!!!!