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PODCAST

Unexpected Elements

BBC World Service

The news you know, the science you don’t. Unexpected Elements looks beyond everyday narratives to discover a goldmine of scientific stories and connections from around the globe. From Afronauts, to why we argue, to a deep dive on animal lifespans: see the world in a new way.

science

All Episodes

60:58

Nasa probe Osiris Rex lands on asteroid

Unexpected Elements ·

2020/10/25

Science in Action talks to Nasa researcher Hannah Kaplan who is part of the team for the space agency’s sampling mission to the asteroid Bennu. Mission scientists were overjoyed this week when the probe Osiris Rex momentarily touched the asteroid and sucked up some of the sand and grit on its surface. What might we learn when the sample is returned to Earth in three years' time? There is some not-such-good news about a theory about immunity to the pandemic coronavirus, and medical researchers in the

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68:28

Covid -19 mortality

Unexpected Elements ·

2020/10/18

Why is there such a range in the number of deaths from Covid -19 between countries? A study of the data across 21 industrialised countries reveals a wide discrepancy. Preparedness and the point at which countries went into lockdown were key factors says Epidemiologist Jonny Pearson- StuttardRecurring illnesses which show up sometimes months after a Covid -19 infections are being more commonly reported. The Uk’s National Institute for Health research has launched a major initiative to better

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70:46

Do Covid–19 mutations matter?

Unexpected Elements ·

2020/10/11

Data from clinical investigations has suggested that a specific mutation in the SARS-Cov -2 virus has made it more transmissible. This finding is now supported by molecular biology work. Ralph Baric from the University of North Carolina led a team comparing the form of the virus which first emerged from China with the mutated type now prevalent word wide. Bats are known to carry many different types of viruses, horseshow bats specifically carry coronaviruses, apparently without any ill effects to

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70:41

Are children the biggest Covid-19 spreaders?

Unexpected Elements ·

2020/10/04

An analysis of Covid-19 data from South India shows children more than any other group are transmitting the virus both to other children and adults, Epidemiologist Ramanan Laxminarayan tell us the data also shows the situations in which the virus is most likely to spread, public transport is of particular concern.The WHO has launched an initiative to roll out rapid testing, particularly to countries that don’t have access to lab based tests, Catharina Boehme who leads one of the WHO’s partner

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75:35

Why Covid -19 vaccines may not stop transmission

Unexpected Elements ·

2020/09/27

While vaccines against Covid -19 are being developed at unprecedented speed, none of them have been tested to see if they can actually stop transmission of the virus. They are designed to stop those who are vaccinated from developing Covid -19 disease, but not becoming infected. This says Virologist Malik Peiris from Hong Kong University means while vaccinated people themselves may be protected they might also spread the virus. Cells produced in the bone marrow may be responsible for an extreme

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55:48

Malaria resistance breakthrough

Unexpected Elements ·

2020/09/20

Some East Africans have a genetic mutation which gives them resistance to Malaria. Investigations into how it works have produced a surprising finding. As researcher Silvia Kariuki explains it’s all to do with the surface tension of the red blood cells.SARS-CoV- 2 can pass from people in the very early stages of Covid -19, before they show symptoms. New research shows identifying cases at this early stage is crucial to controlling the pandemic. And yet most testing regimes require symptoms to show

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69:34

Covid -19 science versus politics

Unexpected Elements ·

2020/09/13

With the announcement in the UK of investment in rapid testing for people who may not have Covid -19 we ask why is this only happening now? For months on this programme we’ve featured scientific research suggesting such a strategy would be the quickest way to end the pandemic. We speak with Connie Cepko and Brian Rabe who have developed a rapid test and Manu Prakash who is currently rolling it out to countries in the global south.Could a huge motorcycle rally really have been the source of over a

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62:26

Nyiragongo - is Goma under threat?

Unexpected Elements ·

2020/09/06

A new survey of the volcano's activity suggests there may be an eruption in the next 4 to 7 years. It's a particular concern for the populations of Goma and Gisenyi, two cites between the volcano and lake Kivu. As we hear from the director of the Goma Volcano Observatory Katcho Karume, the city of Goma in particular has expanded so much that many people now live right next to fissures in the flank of the volcano through which any eruption would likely occur.Hurricane Laura made landfall in

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65:36

Covid-19 Therapy Controversy

Unexpected Elements ·

2020/08/29

This week Science in Action examines the evidence around the Trump Administration’s emergency use authorisation of convalescent plasma therapy for the treatment of Covid-19. Donald Trump described its US-wide roll-out as ‘historic’ but the majority of scientists and doctors disagree, questioning the scientific basis for the government’s decision. Roland Pease talks to Mayo Clinic’s Michael Joyner, the leader of the convalescent plasma therapy study on which the action was based. The Mayo Clinic

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59:37

Trouble in Greenland

Unexpected Elements ·

2020/08/23

Has the loss from Greenland’s vast ice sheet reached a tipping point? According to glaciologist Michalea King, the rate at which its ice flows into the sea stepped up about 15 years ago. The process of glacial retreat is outpacing the accumulation snow and ice in Greenland’s interior and the loss of Greenland’s ice to the Ocean is set to continue for many years to come. An international study of past climate changes during the last ice age reveals how fast changes to weather patterns and climate

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72:13

Putin’s Covid-19 vaccine

Unexpected Elements ·

2020/08/16

Russia’s President Putin announced the registration of a vaccine for coronavirus. This was reported with widespread alarm amid concerns over safety, but as BBC Russian Service’s Sergei Goryashko, tells us the announcement was a political move to capture the headlines.Investigations by Alexandra Reynolds and Hooman Poor at New York’s Mount Sinai Medical Centre have revealed why some Covid 19 patients have low oxygen levels, but don’t have breathing difficulties. The answer came when looking for signs

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60:22

Counting the heat health threat from climate change

Unexpected Elements ·

2020/08/09

If the world does not curb its greenhouse gas emissions, by the end of this century, the number of people dying annually because of extreme heat will be greater than the current global death toll from infectious diseases - that’s all infectiousness diseases, from malaria to diarrhoeal diseases to HIV. This is the grim assessment of climate researchers and economists of the Climate Impact Lab in the largest global study to date of health and financial impacts of temperature-related deaths. Roland

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62:14

NASA rover heads for Mars ancient lake

Unexpected Elements ·

2020/08/02

NASA launches its new robotic mission to Mars. The rover, Perseverance, will land in a 50 kilometre wide crater which looks like it was filled by a lake about 4 billion years ago - the time when life on Earth was getting started. Mission scientist Melissa Rice explains why this is one of the most promising places on Mars to continue the search for past life on the red planet.Japanese and US scientists have revived microbes that have been buried at the bottom of the Pacific Ocean for 100 million

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61:45

Making a Covid-19 vaccine for two billion people

Unexpected Elements ·

2020/07/26

There's been encouraging news about the Oxford Covid-19 vaccine this week from a trial involving about 1,000 people. But how great is the challenge in scaling up from making a few thousand doses of the vaccine to manufacturing two billion by the end of this year? Sandy Douglas of Oxford's Jenner Institute explains how they plan to mass-produce the vaccine safely given the speed and magnitude of the scale up. A new kind of treatment for Covid-19 may come from an unlikely source: llamas and

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53:30

How long do Covid-19 antibodies last?

Unexpected Elements ·

2020/07/18

Science in Action looks at some of the latest research on how response of our immune system to infection by the coronavirus. Researchers at Kings College London find that protective antibodies appear to fade away after about three months following infection whereas a team at the Karolinska Institute has discovered that although antibodies may decline, other important players called T cells in our defences do not. Dr’s Katie Doores and Marcus Buggert talk about the implications of these

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68:06

Rwanda’s game changing coronavirus test

Unexpected Elements ·

2020/07/11

African scientists have developed a reliable, quick and cheap testing method which could be used by worldwide as the basis for mass testing programmes.The method, which produces highly accurate results, is built around mathematical algorithms developed at the African Institute for Mathematical Sciences in Kigali. We speak to Neil Turok who founded the institute, Leon Mutesa Professor of human genetics on the government coronavirus task force, and Wilfred Ndifon, the mathematical biologist who

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63:42

Covid-19 and children

Unexpected Elements ·

2020/07/05

Studies in children who have been severely affected by Covid-19 in Italy, Britain and the US are showing the same thing – a range of symptoms linked to an overactive immune system. Elizabeth Whittaker from London’s Imperial College discusses the similarities in these cases and possible reasons for this syndrome with Shanna Kowalsky from Mount Sinai hospital in New York. How much should drugs for Covid-19 cost? Remdesivir, which has shown promise against the virus, has been priced at over $2000 for a

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67:23

Record high temperatures – in the Arctic

Unexpected Elements ·

2020/06/28

A record summer temperature in Siberia is an indication of major changes in the Arctic climate. Changing weather patterns there have a knock on effect for other parts of the planet says Climatologist Steve VavrusChile appeared to get Covid-19 under control, but in reality the virus was spreading uncontrollably through poor areas, As we hear from our correspondent in Santiago Jane Chambers, the lockdown has tightened but cases continue to rise.And could mass testing using new saliva tests help

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71:36

Covid -19 hope for severe cases

Unexpected Elements ·

2020/06/21

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 finding

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64:01

Food security, locusts and Covid -19

Unexpected Elements ·

2020/06/14

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

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