3f:T478,This week, the Reykjanes volcano in Iceland has erupted, following weeks of seismic activity. Edward Wayne Marshall, from the University of Iceland, brings us the latest science about the volcano. Also this week, the UK's 40-year-old JET fusion facility has been switched off. Roland Pease went along to watch. Fusion facilities are trying to create clean energy by replicating the processes in the Sun. And the Sun itself is currently approaching solar maximum, which means we may get to enjoy more spectacular auroras but could also experience widespread radio blackouts. Solar physicist Dibyendu Nandi, from the Centre of Excellence in Space Sciences in Kolkata, tells us more. And in the outer reaches of our Solar System, the iconic Voyager 1 craft has started sending back nonsense data. William Kurth, who has worked on Voyager since its launch in 1977, reveals his personal and scientific connection to the mission. Presenter: Roland Pease Producer: Alice Lipscombe-Southwell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth (Image: Volcano Erupts On Iceland's Reykjanes Peninsula. Credit: Micah Garen/Getty Images)40:T52e,

Max Pearson presents a collection of this week’s Witness History episodes from the BBC World Service. Our guest is Professor Jenni Barclay from the University of East Anglia in the UK. She tells us about some of the most significant volcanic eruptions in history.

We start with the eruption of Eyjafjallajokull in 2010, which caused air travel to stop across Europe. Then, memories of the Bolivian Water War in 2000.

In the second half of the programme, we hear how the EpiPen was invented by Sheldon Kaplan. Plus, how Rosalind Franklin’s research helped determine the structure of DNA. Finally, the discovery of the ancient city of Thonis-Heracleion, underwater off the coast of Egypt.

Contributors: Sigrun Hreinsdottir - scientist who saw the eruption of Eyjafjallajokull. Jenni Barclay - professor of volcanology at the University of East Anglia, UK. Oscar Olivera - union official who led Bolivian Water War protests and negotiations. Michael Kaplan - son of Sheldon Kaplan, inventor of the EpiPen. Michael Mesa - colleague of Sheldon Kaplan. Jenifer Glyn - sister of scientist Rosalind Franklin, who helped discover the structure of DNA. Franck Goddio - underwater archaeologist who discovered Thonis-Heracleion.

(Photo: Eyjafjallajokull erupting in 2010. Credit: Reuters/Lucas Jackson)

41:T4e1,Increased tremors have been felt in Iceland, and concerns about an impending eruption have led to the evacuation of the town of Grindavik. Geophysicist Dr Freysteinn Sigmundsson reveals more about the events and whether this area of Iceland may be entering a new period of volcanic activity that could span centuries. Also, Google DeepMind’s new GraphCast system could revolutionise weather forecasting. Rémi Lam from Google DeepMind and Dr Matthew Chantry from the European Centre for Medium-Range Weather Forecasts explain how it works. Beyond warming our planet, climate change can have wide-ranging, unexpected impacts on people and the environment. Dr Christopher Trisos from the University of Cape Town has the lowdown. Finally, recreating ancient seawater in the laboratory has given Dr Rosalie Tostevin, a geochemist from the University of Cape Town, additional information about the metals used by early microbes. Presenter: Roland Pease Producer: Alice Lipscombe-Southwell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth (Image: Emergency services worker walking near a crack cutting across the main road in Grindavik, southwestern Iceland following earthquakes. Credit: KJARTAN TORBJOERNSSON/AFP via Getty Images)

Eyjafjallajökull: The volcano that stopp...