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Science In Action

The BBC brings you all the week's science news.

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Folgen von Science In Action

335 Folgen
  • Folge vom 28.12.2023
    Following in the footsteps of ancient humans
    In this special episode of Science in Action, Roland Pease travels to South Africa to gain a deeper understanding of human origins. Along the way, he speaks to ichnologist Charles Helm and national parks ecologist Mike Fabricius, who take him to a special – and extremely windy – location, where early human footprints are permanently preserved in the rock. At the University of Cape Town, Roland speaks to Rieneke Weij and Georgina Luti. They are studying the geochemistry of rocks that existed in caves alongside our ancient relatives. Across the city, in the Iziko South African Museum, Wendy Black and Amy Sephton discuss the ways in which we think about our deep past and how we can decolonise the human story. Presenter: Roland Pease Producer: Ella Hubber Editor: Martin Smith Production co-ordinator: Jana Bennett-Holesworth (Image: Human fossilized footprint in hardened mud or clay. Credit: Waltkopp/Getty Images)
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  • Folge vom 21.12.2023
    Volcanic eruption lights up Iceland
    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)
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  • Folge vom 14.12.2023
    The science of morning sickness
    An international team of researchers led by the University of Cambridge’s Prof Stephen O’Rahilly have discovered that sensitivity to the hormone GDF15 may cause severe morning sickness during pregnancy. Dr Marlena Fejzo, who took part in the study, tells us more. Back in September, the OSIRIS-REx craft dropped a sample from the asteroid Bennu into the Utah desert. Now, scientists around the world have started studying the dust fragments in earnest. We join Dr Ashley King from the Natural History Museum in London and beamline scientist Dr Sharif Ahmed as they embark on their research. Professor Scott Fendorf, from the University of Stanford, reveals that wildfire smoke contains heavy metals, which may be why it’s so damaging to our health. Dr Junjie Yao from Duke University has worked on a new 'sono-ink'. This ink can be used to 3D print structures within the body, which can be used to mend tissues, bones and organs. Presenter: Roland Pease Producer: Alice Lipscombe-Southwell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth (Photo: Young pregnant woman, 35 years old, feeling sick on a toilet. Credit: Getty Images)
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  • Folge vom 07.12.2023
    Can carbon capture live up to its hype?
    The burning of fossil fuels releases the greenhouse gas CO2. Many countries at COP28 have expressed an interest in using carbon capture technology to permanently capture and store this CO2. Climate and energy expert Dr Richard Black tells us more about this technology and how helpful it is in the fight against climate change. Sticking with COP28, Dr Manjana Milkoreit, from the University of Oslo, contributed to this week’s Global Tipping Points report, which revealed the Earth could be racing toward a set of critical thresholds that will put the Earth into a new state. Dr Joyce Kimutai is also at COP28. Originally from Kenya, she’s the lead author of a new paper from World Weather Attribution. The paper found that climate change has made deadly rainfall in East Africa up to two times more intense. And finally, this week Professor Dany Azar published a paper in Current Biology that not only identified the oldest fossilised mosquito, but also found that it was a male with blood-sucking mouthparts – a trait only seen in female mosquitoes today. Presenter: Roland Pease Producer: Alice Lipscombe-Southwell Editor: Martin Smith Production Co-ordinator: Jana Bennett-Holesworth (Image: TBC. Credit: TBC / Getty Images)
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