- Author: Mark Lynas
- Language: English
- Year: 2011
- Author: Mark Lynas
- Language: English
- Year: 2011
- Author: Mireya Mayor
- Language: English
- Year: 2011
7 Billion
mobi
- Author: National Geographic
- Language: English
- Year: 2011
- Author: National Geographic
- Language: English
- Year: 2011
- Author: Mireya Mayor
- Language: English
- Year: 2011
- Author: Jane Wooldridge Larry Bleiberg
- Language: English
- Year: 2011
- Author: Nigel Pickford
- Language: English
- Year: 1999