Nuclear fusion, which involves the binding together of atoms at extremely high temperatures, is the process that powers stars. Scientists hope it can become a widespread source of energy that avoids burning fossil fuels, thereby avoiding the release of damaging greenhouse gases. However, technical challenges have prevented nuclear fusion being used to generate energy on a commercial scale. A company backed by Jeff Bezos, the Amazon founder, is to build its first nuclear fusion plant in the UK in a bid to show how the technology can be turned into a realistic source of clean energy. Is time for world to start investing in Fusion plants ?

