National Geographic : 2009 Mar
• Not long ago, my wife, PJ, and I tried a new diet---not to lose a little weight but to answer a nagging question about climate change. Scientists have reported recently that the world is heating up even faster than pre- dicted only a few years ago, and that the consequences could be severe if we don't keep reducing emissions of carbon dioxide and other greenhouse gases that are trapping heat in our atmosphere. But what can we do about it as individuals? And as emissions from China, India, and other devel- oping nations skyrocket, will our efforts really make any difference?