Unchecked, these three emerging economies could send the planet into flames. Here's what they're trying to do about it. THE PROBLEM China has the dubious honor of being the world's largest emitter of greenhouse gases, burning some 2.5 billion tons of coal at its 541 coal-fired power plants. THE SOLUTION China..
Seven technologies that will change our lives more than the new iPhone.\r1 Open-Source Cell phones The open-source movement has come to the cell phone with the launch of Google's new Android operating system. It's great for gadget lovers, but even better for the millions of users in the developing world..\n