Huffington Post: This weekend, over 10,000 students and young green energy activists will converge on Washington DC, for a historic national youth summit, Powershift09 Organized by the Energy Action Coalition and a mind-boggling network of nationwide student organizations, Powershift09 will present 72 non-stop hours of panels, workshops, concerts and speeches with a take-no-prisoners message: It’s time for the White House and US Congress to stand up to the dirty energy lobby and pass the energy and climate …