This week the UK-based JET Laboratory broke its 25-year-old record for energy extracted by nuclear fusion - the process that powers the stars. Using temperatures 10 times hotter than the sun, nuclear fusion has the potential to provide vast amounts of energy at a very low carbon cost. But re-creating the power of the stars here on earth is no easy feat, and Roland Pease has been in Culham, speaking to the scientists at the forefront of this breakthrough.

We discuss the Advanced Research and Invention Agency ( ARIA. The ARIA bill is about to go through the final stages of parliamentary approval and will have a budget of £800 million to play with over four years. But it’s not without its critics. Many in the science community have questioned ARIA’s transparency and accountability to the public, because the government have decided to exempt ARIA from Freedom of Information Requests. We hear from UKRI head Professor Dame Ottoline Leyser and Professor of Research Policy James Wilsdon.

And from blue skies research to blue seas research, scientists have found a surprising seabed community that lives in the cold nutrient-sparse waters under the central arctic ocean: giant sponges. And it turns out these resourceful organisms have been feasting on the thousand-year-old remains of now-extinct worms. We hear from Teresa Maria Morganti from the Max Planck Institute for Marine Microbiology and Autun Perser from the Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research.