IAU 242, Astrophysical Masers and Their Environments, Alice Springs, Australia; Harm Habing, Miller Goss, Roy Booth, Karl Menten, Masaki Morimoto, Moshe Elitzur, x, Luis Rodriguez, Mark Reid, Jim Moran, Shuji Deguchi, Vladimir Strelnitskii, Willem Baan, x, Zheng Xing-Wu; March 15, 2007