Astronomer Alex Filippenko, who late last year was named national Professor of the Year, has received the equally prestigious Richtmyer Award from the American Association of Physics Teachers. After presentation of the award Jan. 9 at the association's annual meeting in Seattle, he delivered a talk on how supernovae have led to the mysterious concept of dark energy. With audio interview<br><br><a href='http://www.berkeley.edu/news/media/releases/2007/01/09_filippenko.shtml' target='_blank'>http://www.berkeley.edu/news/media/releases/2007/01/09_filippenko.shtml</a><br><br>