ClimateBiz: Greenhouse gas emissions grew in 2007 by 1.4 percent over the year before because of unfavorable weather and a drop in hydropower generation, according to new data from the Energy Information Administration. Total greenhouse gas emissions reached 7,282.4 million metric tons of carbon dioxide equivalent, roughly 16.7 percent above 1990 levels. Since then, emissions have risen 0.9 percent on average every year. President-elect Barack Obama has stated his intention of aggressively …