The revolutionary demographic changes that the world continues to experience are impacting virtually every aspect of human life, including the environment.
In the decades ahead, as temperatures rise and droughts intensify, Northern California's climate, vegetation, and wildlife may look more like Southern California does today.
Joseph Chamie: World demographics are changing profoundly: What does it mean for the 21st century?
The revolutionary demographic changes that the world continues to experience are impacting virtually every aspect of human life, including the environment.