More than 110 individuals from eleven countries attended the 2011 International Workshop on Environment and Alternative Energy at ESTEC on November 15 -18. For the first time since the inception of NASA-C3P workshops, a full day was dedicated to a student session. Fifteen students from around the globe gave oral presentations along with poster displays relating to the latest technologies in environmental and alternative energy strategies. Judges from NASA, C3P and ESA awarded plaques to the top three students.