A bold move from the world’s largest shipping company could have big implications for the planet . Maersk has bought ships which can run on both traditional fuel and methanol. This  alternative fuel, the team explains, could drastically reduce shipping’s contribution to global CO2 emissions. Neuroscientist Anil Seth puts forward a radical new theory of the self, the subject of his latest book Being You – A New Science of Consciousness. The team explains how researchers are inching closer to solving one of the biggest problems in physics - quantum gravity. They also explore why the Large Hadron Collider - one of the most technologically advanced machines in the world - still stores data on old-school tapes. And they find out about Arabia’s role in the early history of humanity. On the pod are Penny Sarchet, Timothy Revell, Adam Vaughan, Leah Crane,- Chelsea Whyte and Rowan Hooper. To read about these stories and much more, subscribe at newscientist.com/podcasts. Our GDPR privacy policy was updated on August 8, 2022. Visit acast.com/privacy for more information.