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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 25.03.2021
    Science on the side of a new volcano
    Sightseers and social media scrollers have flocked to the slopes of Fagradalsfjall, a volcano erupting 40 kilometres west of the Icelandic capital Reykjavik. Having produced less than 1 square kilometre of lava this eruption could be deemed relatively minor, allowing bystanders to get up close and personal. Among the hubbub, you might also spot Dr Evgenia Ilyinskaya from University of Leeds, just one of the researchers measuring and observing the event from an alarmingly small distance. Her interest is more in the invisible toxic gases and trace elements being emitted from one of the deepest magma eruptions in recent times than the more cinematic molten rock. This week scientists working on results from the Large Hadron Collider at CERN announced intriguing evidence (NB “evidence” – not yet a definite discovery) of physics beyond our current understanding. Everything we can detect directly in the universe is made from a few basic building blocks, fundamental particles. These particles are governed by four universal fundamental forces. Our best understanding of these forces and particles are sewn together in the Standard Model of particle physics. Since the 1970s this model has been able to explain most of our experimental results, but not all. Professor Gudrun Hiller from Technische Universität Dortmund has been theorizing as to what sort of experiments might lead to evidence of where the model might be incomplete. And this week, she has reason to feel a little bit proud. As she and her fellow member of the LHCb consortium, Harry Cliff, explain, a mysterious asymmetry in the way certain quarks – beauty quarks – have been seen to decay could be pointing at a deeper, more sophisticated, picture of the nature of the universe. Theorists are theorizing all around the world: could this be a new class of particle called a “leptoquark” that mediates a whole new type of force? The new results have been submitted for publication in the journal Nature, but have also been made public online in what is known as a “preprint”. Science publication has, for hundreds of years, been governed by peer-review. This process has prevented the wider community of scientists from accessing new scientific reports and papers unless vetted by a smaller number of fellow experts in the field. But this hasn’t been the case for all disciplines. “Preprints”, uncorrected proofs, have for some decades played a role in the publication process of physics and mathematics. In these fields, on the whole, lives are not at risk if mistakes get through to publication, but over the past year the practice of posting proofs to preprint servers is now common in the biomedical and life sciences, to accommodate the deluge of research being conducted on Covid-19. Might this be a problem? Or could it demonstrate the value of preprints? A new paper from Jonny Coates (also a preprint) and colleagues has looked at whether much changes on a biomedical or life-science preprint as it travels through peer-review towards conventional publication. Image: Lava flows from Fagradalsfjall volcano in Reykjanes Peninsula, Iceland Credit: Kristinn Magnusson/mbl.is Presenter: Roland Pease Producer: Alex Mansfield
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  • Folge vom 18.03.2021
    International science at sea
    In the UK thousands of scientists have signed open letters to the UK government protesting cuts to international funding announced this week. Abruptly and severely, the cuts may end hundreds of international collaborations between UK scientists and colleagues around the world working on health, climate change, disaster resilience, sustainability and many development topics. Professor Jenni Barclay is a volcanologist at the University of East Anglia, and is one of the organisers of the protest. At the University of Cape Town, Dr Chris Trisos is the director of the Climate Risk Lab at the African Climate and Development Initiative, one of the authors of the IPCC 6th assessment, and has just learned his funding will be terminated, as the UK’s Royal Society must trim its output in this area by two thirds. Professor Otteline Leyser is CEO of UKRI – the UK’s main research funding agency, and will have to work out what will happen to over 900 projects currently under way.Antarctica Iceberg A74 break away Earlier this week German Research Vessel Polarstern released images from its remarkable circumnavigation of Antarctica’s latest iceberg, known as A74. This is the largest chunk of ice to break away from this sector of Antarctica since 1971, approaching the same size of Greater London. Dr Autun Purser describes a hair-raising voyage between the narrow gap left between the berg and the shelf, including the first images of life that have spent at least 50 years in total darkness, hundreds of miles from the open sea. Image: Polarstern between Brunt and iceberg A74, Antarctica Credit: RalphTimmermannPresented by Roland Pease Produced by Alex Mansfield
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  • Folge vom 11.03.2021
    A shooting star parked on your driveway
    Last week a fireball lit up the sky of western England. Locals and professionals scoured the countryside for any surviving precious fragments of meteorite, and thanks to them some bits of the earliest solar system are now in London’s Natural History Museum. And as an excited Sara Russell, Merit Researcher in Cosmic Mineralogy tells us, examples of carbonaceous chondrite – the soft, loamy type that fell in Winchcombe – such as this, are a rare and special chunk of luck.10 years on from the Japanese Tsunami Exactly a decade ago the disastrous huge wave caused by an earthquake at sea struck the coast of Japan, causing death and devastating consequences. The flood defences have been rebuilt to replace the ones swept away. But could new ways of spotting tsunamis beyond the horizon be, well, just over the horizon? Giovanni Occhipinti of the Paris Geophysics Institute tells Roland about his technique of looking at disruptions in the highest levels of the atmosphere - using the slight twinkle in a beam from a GPS or GNS satellite - to infer that a massive wave may be on its way. Hacked EMA emails and mRNA vaccine stability This week a piece in the British Medical Journal provides some insight into how the medical regulatory bodies scrutinised the novel RNA vaccines that were the science marvels of 2020. Investigative journalist Serena Tinari was one of the people who received anonymously a large, though selective, bundle of hacked emails and documents dating back to November copied from the servers of the European Medicines Agency. They make mention of concerns the Agency had over the levels of effective RNA contained in some batches of the industrially produced Pfizer Biontech Covid vaccine compared to the laboratory produced doses. The EMA did subsequently licence the vaccine - the problem having presumably been solved. However, as Serena describes, she was then surprised that the companies and agencies she and the BMJ approached would not tell her what the threshold was for adjudging acceptable levels, given as is well known, the fragility of mRNA and the need to store it carefully. They said it was commercially sensitive.But as RNA researcher Prof Anna Blakney tells Science in Action, there are fascinating reasons why that might simply not be known, and also why precise accuracy likely doesn’t matter too much compared to the better-known clinical efficacy these vaccines continue to demonstrate. Presenter: Roland Pease Producer: Alex Mansfield Studio Manager: Duncan HannantImage: Meteorite of carbonaceous chondrite found in Gloucestershire, England, UK Credit: Anonymous
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  • Folge vom 04.03.2021
    Uncovering history with Little Foot's skull
    One of our most complete ancient ancestor’s fossils has been transported to the UK from South Africa in order to be scanned at the Diamond Light Source. Roland Pease investigates what these scans could reveal about the human story. Professor Corinne Le Quéré explains how she managed to look past the 7% reduction in human emissions caused by the pandemic in 2020 to reveal the impact of the Paris Climate agreements, and explains what more needs to be done. Roland speaks with anthropologist Dr. Rolf Quam, who has studied the inner ears of fossilised Neanderthal skulls to reveal they may have evolved the ability to hear the complex sounds of spoken language separately to our own species. Dr. Emma Hodcroft discusses the Brazilian P1 COVID 19 variant that is spreading around the world. (Image: Little Foot Skull. Copyright: Diamond Light Source Ltd)Presenter: Roland Pease Producer: Rory Galloway
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