RAEL’S COMMENT: 3 billion is way too much: the target must be 700 million.
In his new book A Planet of 3 Billion, Christopher Tucker presents a vision of a future world inhabited by 3 billion people, compared to 7.8 billion today. Inspired by Joel Cohen’s 1995 book How Many People Can the Earth Support? Tucker sets out to answer exactly this question. The ecological destruction caused by humanity demands reduced consumption and a new economy, but also strong future population decline. To understand why and how this can be achieved, Tucker uses a geographical approach. Despite a few weak sections, this book is worth reading by both scholars and general readers.