Over the next half century, the human population, divided by culture and economics and armed with weapons of mass destruction, will expand to nearly 9 billion people. Abrupt climate change may throw the global system into chaos; China will emerge asa superpower; and Islamic terrorism and insurgency will threaten vital American interests. How can we understand these and other global challenges? Harm de Blij has a simple answer: by improving our understanding of the world´s geography. In Why Geography Matters , de Blij demonstrates how geography´s perspectives yield unique and penetrating insights into the interconnections that mark our shrinking world. Preparing for climate change, averting a cold war with China, defeating terrorism: all of this requires geographic knowledge. De Blij also makes an urgent call to restore geography to America´s educational curriculum.