Angels & Airwaves will headline a free mtvU Earth Day Concert at the Massachusetts Institute of Technology as part of a reward for students at the university winning the mtvU GE ecomagination Challenge. For the national competition, college students were asked to come up with innovative ways to make their campus more environmentally friendly, and the group Biodiesel@MIT, which consists of more than a dozen students, won for its solar-power refueling station and processor that converts vegetable oil into biodiesel. The team is also being given a $25,000 eco-grant to help the school reduce its energy costs. The A&A show will air in late April on mtvU. Wow, how things change! When I was in college we made a pyramid out of beer cans. No wait, that was last night.