TG Daily: Time to start the finger-pointing again. A class at the Massachusetts Institute of Technology (MIT) has begun to track the carbon footprint of different lifestyle in different nations. And the picture painted for the U.S. isn’t pretty: Even the most power conscious people in this country use more than twice the energy of the average person around the world. If you are looking for people with the worst carbon footprint, look among the super-rich such as Bill Gates and Oprah Winfrey, MIT …