The Guardian's Science Weekly

Nicola Davis invites Prof Brigitte Van Tiggelen and Dr Peter Wothers on to the podcast to look at how the periodic table took shape and asks whether it might now be in jeopardy. Help support our independent journalism at

Earlier this year, the UK government announced it wanted to end new HIV transmissions in England by 2030. Hannah Devlin looks at the history of the epidemic, including its impact on the gay community, recent promising drug trials and whether Britain can meet its target. Help support our independent journalism at

What can we learn from chimps when it comes to politics and power? Ian Sample meets the leading primatologist Prof Frans de Waal of Emory University to discuss good leadership and what we can learn from our closest living relatives.. Help support our independent journalism at

Science Weekly joins forces with our sister technology podcast, Chips with Everything, to look at the future of weather forecasting. Graihagh Jackson finds out how accurate predictions currently are, while Jordan Erica Webber discusses how street cameras and connected cars could improve the forecast further. Help support our independent journalism at

What happened before the Big Bang? This is one of the hardest questions scientists are trying to answer, but Prof Hiranya Peiris is not daunted by the challenge. Hannah Devlin invited Peiris on the podcast to discuss the origins of our universe. Help support our independent journalism at