Population has always been an emotive topic. Understandably - it's about sex, birth and death. It's about food, money, culture and religion. And it's also a political hot potato that sprouts myths by the minute. This book takes a level-headed look at what the numbers and projections really mean; why women in most parts of the world are having fewer children; what will happen to our societies as we all live longer; and what having babies has to do with climate change.