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Science In Action

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

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Folgen von Science In Action

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  • Folge vom 24.03.2022
    Warming world
    Unseasonably high temperatures have been recorded in both polar regions. Glaciologist Ruth Mottram discusses why they might be occurring now and the potential impact on her own work measuring climate change in Greenland.Erica Ollmann Saphire from the La Jolla Institute for Immunology tells us about her work developing new treatments for Ebola, she is looking to develop drugs which work not just on Ebola but also a range of related Viruses. And Eugene Koonin from the United States National Institutes of Health shows us how his computer modelling of the mutations of Sars Cov -2 suggest some good news - that the virus might not be able to mutate into further dangerous forms – at least not with its current set of genetic tools. Eugene is originally from Russia and both he and President Obama’s science advisor John Holdren are keen to keep up ties with scientists in Russia despite the international sanctions now being applied over the war in Ukraine. Both point out that many Russian scientists have opposed the war, and that curtailing scientific collaboration could have a detrimental effect not just on science in Russia but elsewhere as well. Image: Penguins on an ice float, Paradise Harbor, also known as Paradise Bay, behind Lemaire and Bryde Islands in Antarctica. Credit: Leamus via Getty Images)Presenter: Roland Pease Producer: Alex Mansfield
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  • Folge vom 17.03.2022
    Covid in the sewers
    Analysis of wastewater from sewage systems has provided an early warning system for the presence of Covid-19 in communities – showing up in the water samples before people test positive. It’s also possible to identify the variants and even specific genetic mutations. Davida Smyth of Texas A&M University has been using this technique in New York and found intriguing results - forms of the virus not present in humans. The suggestion is that mutated forms may be infecting other animals, possibly those present in the sewers. An analysis of long Covid, symptoms of fatigue, and ‘brain fog’ which occur long after initial infection, show that around a quarter of those infected develop these symptoms. Lucy Cheke of Cambridge University discusses the implications.The war in Ukraine has highlighted the importance of the region in supplying raw materials and energy to other countries, gas, cereal crops, and fertilisers in particular. As crop scientist John Hammond from Reading University explains, the stopping of fertiliser exports from Russia, in particular, could impact food security in many countries. And with unseasonal fires already burning in the Western US Caroline Juang of Columbia University’s Earth Observatory gives us her analysis of the driving factors in the intensification of fires year-on-year.(Image: USA, New York, steam coming out from sewer. Credit: Westend61/Getty Images)Presenter: Roland Pease Producer: Julian Siddle
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  • Folge vom 10.03.2022
    Why are Covid-19 cases rising in Hong Kong?
    Hong Kong had been very successful at preventing the spread of Covid-19. Testing and isolation measures were very effective. However, vaccine uptake was low amongst elderly people and that says virologist Malik Peiris has now left them vulnerable to the highly infectious Omicron variant. The bombing of a scientific institute in the Ukrainian city of Kharkiv has echoes of the Stalinist purges says physicist and historical Mikhail Shifman. He tells us how the institute developed as a leading centre for physics in the 1930s, but scientists there fled or were murdered after being targeted by Stalin’s regime.Economic sanctions and other measures designed to isolate Russia are likely to have an impact on Russian participation in international scientific collaborations. Nikolay Voronin from the BBC’s Russian Service gives us his assessment of the immediate impact and, if the conflict continues long term, the potential for Russian science to retreat the kind of isolation last seen during the cold war.Presenter: Roland Pease Producer: Julian Siddle(Photo: Patients wearing face masks rest at a makeshift treatment area outside a hospital, following a Covid-19 outbreak in Hong Kong, 2 March, 2022. Credit: Tyrone Siu/Reuters)
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  • Folge vom 03.03.2022
    Covid -19 origins
    Wuhan's Huanan Seafood Market is associated with many of the first cases or Covid- 19, but data on precisely how and from where the virus might have first spread has been difficult to find. However a re-examination of the earliest samples collected from the market seem to pinpoint where the virus first showed itself. Sydney University virologist Eddie Holmes says this evidence will be crucial in determining which animals may have initially passed the virus to humans. Humans are known to have passed the Sars-Cov-2 virus to other animals, including cats, mink and deer. Canadian researchers have recorded the first incident of a modified form of the virus passing back from deer to humans. Virologist Samira Mubareka from the University of Toronto explains the implications. Chernobyl, the site of the worlds worst nuclear accident is back in the news as the Russian invasion of Ukraine led to a stirring up of nuclear material when troops entered the site. Ukraine has a number of nuclear reactors, Claire Corkhill, professor of nuclear materials at Sheffield University explains the potential risks from the current conflict and safeguards in place.And we hear from Svitlana Krakovska Ukraine's representative on the Intergovernmental panel on Climate Change, on her thoughts on the prospects for climate action and scientific progress in Ukraine. Image: Disinfection Work At Wuhan Huanan Wholesale Seafood Market, China 4 March 2020. Credit: Zhang Chang / China News Service via Getty Images.Presenter: Roland Pease Producer: Julian Siddle
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