Science Weekly

At a moment when the world feels like a particularly unsettling place, Science Weekly is asking what it is that makes humans happy – and how can we bring more happiness into our lives? In episode one, Ian Sample asks what makes a country happy? Johannes Eichstaedt, assistant professor of psychology and human-centred AI at Stanford University, explains why the Nordic countries often rank highly in the annual World Happiness Report, and what we can learn if we look beyond them. Help support our independent journalism at theguardian.com/sciencepod

Madeleine Finlay talks to science editor and podcast co-host Ian Sample about how Donald Trump approached science when in office last time, and what his second term is likely to mean for the environment, health and scientific research. Help support our independent journalism at theguardian.com/sciencepod

Space-settling enthusiasts have long had an eye on Mars, and now they have the backing of the world’s richest man. Elon Musk recently claimed that humans could be on the planet by 2030 and be living there in a self-sustaining city within 20 years. But is it really that simple? Madeleine Finlay heads to Imperial College London where Prof Sanjeev Gupta gives her a tour of the red planet, and meets Kelly Weinersmith who, along with her husband, Zach, recently won the Royal Society Trivedi science book prize for their book A City on Mars. She explains why life on Mars may not be the idyll some would have us believe. Help support our independent journalism at theguardian.com/sciencepod

Biodiversity correspondent Phoebe Weston takes Madeleine Finlay through the news from the UN Cop16 biodiversity summit in Cali, Colombia. Countries are wrangling over funding to protect nature and who should profit from the natural resources of the world’s least developed nations. Help support our independent journalism at theguardian.com/sciencepod