In this issue of Cosmos Magazine: Imagine using a 3D printer to produce organs from a person’s own cells that can be transplanted without any risk of rejection. Scientists have already started. Fusion energy is clean and virtually limitless but finding a cost-effective way to harness its power has been elusive. That may be about to change. Scientists created the technology that allows governments to listen into to all our conversations. But physics may also have the answer to make our communications secure. We look back at the day the ground shifted under our feet with the bold theory of tectonic plates, which changed the way geologists understand our planet. Plus, our supermassive black hole – we take a journey to see what lives at the centre of the Milky Way.