Both the U.S. and China have plans to establish a permanent human presence on the Moon. You might be wondering: why now? The answer to that is the relatively recent discovery of water on the Moon. The question of how humanity will establish a Moon base is perhaps a deeper and more important one. We speak with two people, a planetary scientist who studies lunar geology and a scholar who works on space law and politics, about the challenges facing nations as humanity heads to the Moon.Featuring Mahesh Anand, Professor of Planetary Science and Exploration at The Open University in the UK, and Michelle L.D. Hanlon, Professor of Air and Space Law at the University of Mississippi in the US.This episode was written by Katie Flood and produced by Dan Merino and Katie Flood. The executive producer is Mend Mariwany. Eloise Stevens does our sound design and our theme music is by Neeta Sarl. Full credits for this episode are available here. A transcript will be available soon. Sign up here for a free daily newsletter from The Conversation.Further reading: Lunar mining and Moon land claims fall into a gray area of international law, but negotiations are underway to avoid conflict and damage to spacecraftSpace law hasn’t been changed since 1967 – but the UN aims to update laws and keep space peacefulWater on the Moon: research unveils its type and abundance – boosting exploration plansIf you like The Conversation Weekly, we encourage you to check out two limited series podcasts produced by The Conversation: Fear & Wonder and Great Mysteries of Physics. Available on Apple, Spotify, or wherever you like to listen to your podcasts. Hosted on Acast. See acast.com/privacy for more information.