GreenBiz: As the political wrangling continues this week over the details of the Waxman-Markey climate change bill, a new report from a dozen retired U.S. military leaders warns maintaining the country’s current energy stance poses significant risks to its national security. Dependence on fossil fuels and the vulnerable energy grid threaten the country and its military, according to “Powering America’s Defense: Energy and the Risks to National Security,” from the Military Advisory Board (MAB) …