Voice of America: The United Nations Environment Program says the world’s glaciers are shrinking at record rates and many could disappear within decades, in a troubling sign of global climate change. The U.N. agency said Sunday that glaciers shrank by an average of 1.5 meters in 2006, up from just over half a meter in 2005. The agency says further ice loss could have dramatic consequences, particularly in Asia where millions of people depend on seasonal melt water from the Himalayas. The World …