Dec 18 2006
One in every ten people lived in urban areas a century ago. Now, for the first time ever, most people live in cities. By 2050, the United Nations projects, almost …
Jul 01 2006
Over the course of nearly four decades, beginning in the 1940s, annual crop yields surged in poor countries around the world. Between 1960 and 1985 cereal yields, total cereal production, …
Mar 14 2006
Asia was desperate for food after World War II. Only massive shipments of U.S. grain prevented famine. Rice was, and is, Asia’s lifeblood. That’s why the Ford and Rockefeller foundations pooled …
Mar 11 1994
The epidemic of HIV-1 continues to spread throughout the world despite current prevention efforts. Between 1993 and 2000 the World Health Organization projects that at least 26 million people will …