In this report, you will read of the leading scientific breakthroughs CAGE has achieved during its brief journey, setting the stage for our midway-evaluation. We are now at the forefront of cutting-edge gas hydrate related environment and climate research. The quality, quantity and breadth of our activities, results and outputs reflects not only the drive and excellence of the seven individual work package teams but, moreover, how they have effectively combined to provide a truly interdisciplinary framework fit to tackle major scientific questions of global relevance.