A multi arm trial testing a range of drugs has shown that readily available steroids can be lifesaving for people severely ill with Covid-19. Max Parmar, head of the UK Medical Research Council’s clinical trials unit says the trial design, where many potential drugs can be tested against the same controls, is key to producing results quickly. As it spreads around the world SARS-CoV-2 is mutating. But what does this mean? These mutations are part of a natural process and some researchers are find...
Jun 18, 2020•34 min•Transcript available on Metacast Despite the Covid-19 pandemic efforts to counter massive swarms of locusts across East Africa have continued. In many places this has been very effective, killing up to 90% of locusts. However, the threat of repeated waves of locusts remains says Cyril Ferrand, who leads the UN Food and Agriculture Organisation's Resilience Team in East Africa. Conversely West Africa is unaffected by locusts and with a block on imports local producers have seen demand grow for their produce, an unusual positive ...
Jun 11, 2020•28 min•Transcript available on Metacast Autopsies show Covid 19 can affect the brain and other organs. Pathologist Mary Fowkes from the Icahn School of Medicine at Mount Sinai found the signs of stroke - unusually in young people, as well as a disruption of the immune system throughout the body. And studies of heart stem cells show these can be killed by the virus. Cell Biologist Stefanie Dimmeler from the University of Frankfurt says this finding could prove useful in providing treatment and preventative medicine. A massive research ...
Jun 04, 2020•32 min•Transcript available on Metacast The number of cases of Covid -19 infections in Brazil and deaths related to the pandemic may be much higher than official figures show. Testing of the living is not widespread and there are few resources for analysing the potential role of the virus as a cause of death. Virologist Fernando Spiliki gives us his bleak assessment. A remarkable study from South Africa shows just how easily the virus can spread around a hospital, with a single infected person infecting many. However the route of infe...
May 28, 2020•32 min•Transcript available on Metacast There are more than 100 different Covid-19 vaccine trials currently going on. We look at which seem to be the most promising with Helen Branswell from Stat News. And we examine a very old idea, using antibodies from one virus – in this case Sars, to counter another virus Sars-CoV-2 , which causes Covid-19. Davide Corti from Vir Biotechnology says a version of these antibodies offers potential for both vaccination and treatment. Race and Covid-19, there seems to be a link between ethnicity and su...
May 21, 2020•31 min•Transcript available on Metacast How is Covid -19 spread? Who is most at risk and what are the circumstances under which it is most likely to be transmitted? These questions need answers for the implementation of effective and safe strategies to end lockdown. We look at what research is showing. And if you have to go back to work what’s the best way to protect yourself, how should we be using face coverings for example? There are lessons from research on fluid dynamics. Also key is reducing the rate of infection, the R number, ...
May 14, 2020•38 min•Transcript available on Metacast Research from New York examining the blood of people who have recovered from Covid – 19 shows the majority have produced antibodies against the disease, The researchers hope to soon be able to establish whether this confers long term immunity as with more common viral infections. And Research in Berlin and London has identified biomarkers, minute signs of the disease which may help clinicians identify who is likely to develop severe symptoms and what kind of treatment they might need. Mutations ...
May 07, 2020•44 min•Transcript available on Metacast Remdesivir a drug eventually rejected as a treatment for Ebola seems to have aided recovery in a trial with more than a thousand Covid -19 patients. Researchers are cautious but hopeful; a leading health official in the US has made comparisons with the impact of game changing drugs used to treat HIV. In contrast an organisation researching the mechanisms by which bat coronaviruses infect humans has had its funding cut following criticism from President Trump. A scheme to help manufacture ventila...
Apr 30, 2020•49 min•Transcript available on Metacast President Trump has repeated unfounded claims that scientists created Covid-19 in a lab. Rigorous scrutiny of the genetics of the virus reveals no evidence for such a claim. And Brazil’s President Bolsonaro is at odds with his own health advisors – splitting public opinion and action over lockdown measures needed to control the virus. We also look at why Covid -19 seems to be associated with so many different symptoms, from diarrheal infections to complicating kidney disease, to heart attacks An...
Apr 23, 2020•43 min•Transcript available on Metacast Italy is beginning its first tentative steps towards ending its lockdown. These are small steps, opening a few shops in areas where virus transmission has seen big falls. Part of the reason for this controlled strategy is that there are real concerns over a potential resurgence of the virus, Around the world there are now hundreds of trials on drug treatments for Covid-19. Results so far are mixed, with antivirals developed for Ebola and HIV showing positive signs, but antimalarial drugs, champi...
Apr 16, 2020•33 min•Transcript available on Metacast Massively over crowded Moria refugee camp on the Greek island of Lesbos has seen numbers grow from 5 to 20 thousand in a matter of months. Hundreds of people share taps and toilets, there is little chance to implement measures designed to stop the spread of covid 19. So far the camp has not been hit by the epidemic, but aid agencies fear for the most vulnerable in the camp. Covid 19 jumped from bats to humans, possibly via another wild animal. A study of zoonotic diseases has identified many oth...
Apr 09, 2020•26 min•Transcript available on Metacast Nigeria has seen a small number of Covid -19 cases, largely spread amongst the most affluent, people who travel abroad, However there is concern about the potential of the virus to spread to overcrowded slum areas. In such conditions social distancing measures would be difficult to enforce. What are the alternatives? The US now has the majority of cases of the virus, New York has been heavily hit, medics have developed an app to help understand the spread of Covid 19 in the community. The availa...
Apr 02, 2020•33 min•Transcript available on Metacast The strong social distancing policies introduced by China seem to have been successful in stopping the spread of Covid 19. Without any effective drug treatments, reducing our number of contacts is the most effective way to prevent viral transmission. We also look at the similarities been policies in Russia and the US on how best to deal with the virus. In both cases there are contradictions and disagreements between medical professionals and politicians. And a warning from Polio, how vaccines ma...
Mar 26, 2020•29 min•Transcript available on Metacast In Italy the entire population of a small town was tested for Covid 19. Of those infected, one in three people with no symptoms had the virus. And from China researchers found many people carried the virus – even before authorities there began tracking its spread. The findings suggest vulnerable people may contract the virus from those without symptoms. And we’ve news of a breakthrough - new tests looking at Covid 19 antibodies, These should help provide a picture of developing immunity to the v...
Mar 19, 2020•33 min•Transcript available on Metacast Covid- 19 cases seem to be multiplying daily and there is now a growing body of scientific evidence both on its spread and the effectiveness of measures to try and control it. We look at what’s working, what’s not and why. And we look to the potential for coronavirus drug treatments, why despite the hype there really isn’t anything round the corner. Australia’s recent fire season was intense; a new study looks back over 500 years of the weather pattern partly responsible, the Indian Ocean Dipole...
Mar 12, 2020•38 min•Transcript available on Metacast Attributing Australia's bush fires, a major study says man-made climate change was a big driver – making the fires at least 30% worse than they would have been if natural processes were the only factors. We look at preparations for coronavirus in Africa. Although cases there are currently lower than in much of the rest of the world a major training initiative is taking place to spread awareness amongst medics across the continent. We ask why Horseshoe bats in particular carry coronaviruses, and ...
Mar 05, 2020•30 min•Transcript available on Metacast The appearance of Covid -19 in Italy and Iran surprised many this week. As the virus continues to spread we look at ways to contain it. Australia’s fires have burnt around 20 percent of the countries woodlands, what are the implications for the recovery of those ecosystems? And what is the link between the world’s super rich and deforestation? Unsurprisingly it’s money. And we hear about the unexpected cooling effects of hydroelectric dams. (Image: Tourists wearing masks tour outside the Coliseu...
Feb 27, 2020•30 min•Transcript available on Metacast Researchers at the London School of Hygiene and Tropical medicine have developed an online map which presents the latest information on the spread of CoVid-19 and allows anyone to follow the outbreak and compare this data with the spread of Ebola and SARS. See the weblink from this page to try it for yourself. And the coming together of microbiology and big data science has led to the development of a portable device able to spot antibiotic resistant bacteria. This should help with more precise ...
Feb 13, 2020•26 min•Transcript available on Metacast Doctors in the US have treated a coronavirus patient with a drug developed for Ebola. That drug had never been tested on people so its use here seems an extreme move. We look at why this kind of drug developed for one virus might work on another. It’s all down to the genetic material at the centre of the virus. That raises safety concerns as human cells contain similar material. East Africa is experiencing a plague of locusts and bizarrely it’s linked to the Australian wildfires. A weather patte...
Feb 06, 2020•30 min•Transcript available on Metacast Parts of China are on lockdown, a small number of cases have been reported in other countries and the past week has brought widely conflicting views on the potential danger presented by the new virus. We look at the scientific facts, analyse why it’s so difficult to predict the spread of the virus, look at the nature of virus infection and discuss why treatments such as vaccines are not available. We look at why some viruses can jump from animals to humans and examine hi-tech solutions designed ...
Jan 30, 2020•34 min•Transcript available on Metacast The way in which a new virus has emerged in China is reminiscent of SARS, a highly infectious virus that spread rapidly. It’s so similar that Health officials demanded action as soon as its existence became known. And the Chinese authorities and global medical community have acted to try and stop the spread. Events were still developing, even as we were in the studio making this programme, new reports of suspected cases were coming in. The WHO was yet to give its view on the severity of the outb...
Jan 23, 2020•28 min•Transcript available on Metacast An experimental satellite called Aeolus, named after a Greek god of wind, which takes daily global measurements of the wind patterns throughout the depth of atmosphere has improved weather forecasts. ESA’s Anne-Greta Straume explains how it works. The dramatic eruption of the island volcano Taal in the Philippines was a spectacular picture of the plume of ejecta punching a hole in overlying cloud cover. Nearby towns have been blanketed with dust, fissures have appeared in the ground and there ha...
Jan 16, 2020•27 min•Transcript available on Metacast 2019 was Australia’s hottest year on record, a major factor behind the bush fires which have been far worse than usual. We look at the patterns of extreme weather that have contributed to the fires but are also linked to floods in Africa. And the way in which thunderstorms have helped to spread the fires. The armpit of Orion is changing. The star Betelgeuse is dimming some claim this is readying it for a major explosion others are more sceptical, we weight up the arguments. And an Iron Age brain...
Jan 09, 2020•27 min•Transcript available on Metacast Roland Pease is joined by California based science Journalist Molly Bentley as we examine the impact of earthquakes and fires. California has experienced both in the last year - What’s it like to live with a constant threat from these extreme events? We also take a look at NASA’s plans for a new mission to Mars – to look for signs on life. Picture: Roland Pease with science journalist Molly Bentley, Credit: BBC
Jan 02, 2020•26 min•Transcript available on Metacast The latest round of climate negotiations, COP25, have ended without agreement on many fundamental issues. We join researchers from Perdue University in the US who have developed a role-playing game to encourage climate negotiators and others to take a long-term view. Key to this research project is the concept of tipping points, where an environment changes irreversibly from one state to another. This is accompanied by the loss of ecosystems - for example, the widespread melting of Arctic sea ic...
Dec 26, 2019•26 min•Transcript available on Metacast We have the latest from a year long investigation into the causes of the December 2018 Indonesian Tsunami. And we get a look at the first pictures from the Mayotte undersea volcano, which emerged earlier this year off the coast of East Africa. (Anak Krakatau volcano. Credit: AFP/Getty Images) Presenter: Roland Pease Producer: Julian Siddle
Dec 19, 2019•26 min•Transcript available on Metacast This week’s programme comes from the world’s largest earth sciences conference, the American Geophysical Union in San Francisco. Roland Pease talks with Diana Roman of the Carnegie Institution for Science in Washington DC about the tragic White Island volcanic eruption in which at least eight tourists died. Aurora Elmore of National Geographic and Arbindra Khadka of Tribhuvan University in Kathmandu Nepal discuss the state of Himalayan glaciers and climate change. Robert Hazen of the Carnegie In...
Dec 12, 2019•26 min•Transcript available on Metacast Extracts from unpublished papers on the methods used by a Chinese scientist to genetically modify the embryos of two girls reveal a series of potentially dangerous problems with the procedure and ethical shortcomings. We look at the mechanism behind the formation of our facial features and how this is linked to our evolution, scrutinise the impact of current emissions on global climates and see why lithium, used in batteries and medicines, is now a potentially widespread pollutant. (Photo: He Ji...
Dec 05, 2019•35 min•Transcript available on Metacast Molecular scale investigations have identified the mechanism which confers resistance to antimalarial drugs. Researchers hope work to turn off this mechanism could mean cheaper well known antimalarials can become effective once again. We look at the threat to weather forecasting from 5G networks, discuss the origins of much of the technology in our mobile phones and ask what food we’ll be eating in the future and how the past can inform this. Image: Mosquito. Science Photo Library Presenter: Rol...
Dec 02, 2019•29 min•Transcript available on Metacast This year’s Amazon fires have been worse than since 2010, scientists blame a government attitude which they say has encouraged deforestation. Government funded scientists have contributed anonymously to the finding – fearing for their jobs. Food crops and fungus are not normally seen as compatible, but a mutually beneficial relationship between these organisms may help reduce the need for chemical fertilisers and combat climate change. Hayabusa 2, the Japanese space mission is returning to earth...
Nov 21, 2019•27 min•Transcript available on Metacast 
