This proceedings volume contains a collection of 20 papers from the following symposia held during the 2015 Materials Science and Technology (MS&T '15) meeting: 7 th International Symposium on Green and Sustainable Technologies for Materials Manufacturing Processing Materials for Nuclear Applications and Extreme Environments Materials Issues in Nuclear Waste Management in the 21 st Century Nanotechnology for Energy, Healthcare and Industry Materials for Processes for CO 2 Capture, Conversion and Sequestration Hybrid Organic – Inorganic Materials for Alternative Energy