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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

57:32

Covid -19 origins

Unexpected Elements ·

2022/03/06

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

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58:21

Reforming the 'China Initiative'

Unexpected Elements ·

2022/02/27

A scheme in the US designed to prevent industrial espionage and the theft of intellectual property, is to be refocused after it was accused of unfairly targeting Chinese American scientists. We speak to Gang Chen, a professor from MIT who was falsely accused of financial crimes, and Holden Thorp Editor in Chief of the Journal Science who tells us why the ‘China Initiative’ is at odds with the reality of international scientific collaboration.And a huge study of farmed animals in China, from raccoon

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64:21

Bone repair from Covid-19 vaccine technology

Unexpected Elements ·

2022/02/20

Messenger RNA-based vaccines have been used successfully to kick start the antibody production needed to fight Covid-19. Now the technology has been successfully used to encourage the growth of new bones to heal severe fractures. The technique seems to work far better than the current alternatives says Maastricht University’s Elizabeth Rosado Balmayor.Ivory smuggling continues to be a lucrative business for international criminal gangs, however, DNA techniques to trace where ivory seized by law

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65:15

Inside Wuhan's coronavirus lab

Unexpected Elements ·

2022/02/13

The Wuhan Institute of Virology has been at the centre of a controversy surrounding the origins of the virus which caused the Covid-19 pandemic. The work of the lab's previously obscure division looking at bat coronaviruses has been the subject of massive speculation and misinformation campaigns. Journalist and former biomedical scientist Jane Qui has gained unique access to the lab. She has interviewed the staff there extensively and tells us what she found on her visits.And Tyler Starr from the

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63:30

Identifying a more infectious HIV variant

Unexpected Elements ·

2022/02/06

We’re 40 years into the AIDS pandemic, and even with massive public health campaigns, still, 1 ½ million become infected with HIV each year; about half that number die of its ravages. And a study just out shows that this well-understood virus can still take on more worrying forms as a new variant has been uncovered. Although the total number of cases involved is small, and the new variant is as treatable as earlier strains, the finding underlines that viruses can become more infectious and more

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56:41

The roots of Long Covid

Unexpected Elements ·

2022/01/30

There are now a number of biological indicators for the potential development of long covid. Immunologist Onur Boyman of Zurich University Hospital and Claire Steves, Clinical Senior Lecturer at King’s College London strives to tell us how pinpointing these factors is now helping in the development of strategies to predict the syndrome and prepare treatment.The James Webb telescope has reached its final orbit. The years of planning, preparation and rehearsal seem to have paid off. The telescope is

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59:42

Tonga eruption – how it happened

Unexpected Elements ·

2022/01/23

The effects of the Tonga eruption could be felt around the world, many heard the boom of a sonic shock, and tsunami waves travelled far and wide. Volcanologist Shane Cronin from the University of Auckland in New Zealand is one of only a handful of people to have landed on the tiny islands above the volcano where the eruption took place. Those islands have now sunk beneath the waves but Shane tells us what he found when he went there and how his findings could inform what happens next.Stephan Grilli

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57:34

Have we got it wrong on Omicron?

Unexpected Elements ·

2022/01/16

Studies using swabs from coronavirus patients seem to contradict earlier findings from cell cultures which showed Omicon replicated faster than earlier variants. As Benjamin Meyer from the centre for Vaccinology at the University of Geneva, explains there may be other reasons why omicron is spreading faster not just how quickly it reproduces.Predicting how the pandemic will develop is not possible, however predicting what individual mutations in the virus may develop and the impact they might have

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57:32

CORBEVAX – A vaccine for the world?

Unexpected Elements ·

2022/01/09

Now being produced in India CORBEVAX is grown in yeast in a similar way to several other widely available vaccines. The technology used to make it is far simpler and much more readily available than that used to produce mRNA vaccines. In theory, CORBEVAX could be produced cheaply in large quantities and go a long way to addressing the problems of Covid19 vaccine availability globally. It was developed by a team from Baylor College of Medicine in Texas including Maria Elena

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60:49

Omicron – mild or monster?

Unexpected Elements ·

2021/12/26

Studies from South Africa and the UK suggest Omicron may be a mild infection for the majority of people. Hospital admissions are down when compared with other variants. However, the virus is replicating at a much faster rate than earlier variants and is able to overcome vaccines to some extent. Cases studies so far have mainly been in young people. There is concern over what will now happen as Omicron spreads across Europe and the US where there are older unvaccinated populations. Anne von Gottberg

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63:10

Omicron’s rapid replication rate

Unexpected Elements ·

2021/12/19

A study from Hong Kong university shows Omicron replicates 70 times faster than two earlier variants of the SARS-Cov-2 virus. Virologist Malik Peiris, explains how tests using cells from the wind pipe showed the dramatic difference, which supports observations of increased transmission. In contrast Omicron replicated less well than other variants on cells from dep in thre lung – offering some possibility that it may produce mild infections.Tornados in the US do not normally occur in December. The

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69:33

Can the weather trigger a volcano?

Unexpected Elements ·

2021/12/12

Which came first the volcano or the rain? Volcanic eruptions are known to influence global climate systems, even leading to the cooling of the planet. However local weather conditions can also influence the timing and ferocity of volcanic eruptions. As volcanologist Jenni Barclay explains rainwater can contribute to volcanic instability and even increase the explosiveness of eruptions.Syria has been experiencing civil war for more than 10 years. Many people have left including many of the country's

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62:38

Omicron, racism and trust

Unexpected Elements ·

2021/12/05

South Africa announced their discovery of the Omicron variant to the world as quickly as they could. The response from many nations was panic and the closure of transport links with southern Africa. Tulio de Oliveira who made the initial announcement and leads South Africa’s Centre for Epidemic Response and Innovation tells us this is now having a negative effect on the country, with cases rising but vital supplies needed to tackle the virus not arriving thanks to the blockade.Omicron contains many

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62:57

Deliberately doomed dart

Unexpected Elements ·

2021/11/28

d dart Science in ActionDART is a space mission designed to hit a distant asteroid and knock it slightly out of orbit. It’s a test mission, a pilot project for a way of potentially protecting the earth from a stray asteroid. We hear from mission coordinators Nancy Chabot and Andy Rivkin, both from the Applied Physics Labs, APL, of Johns Hopkins University.A new kind of Covid-19 vaccine has successfully undergone preliminary tests. Tuebingen University’s Juliane Walz tells us about how it hopes to

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57:38

The end for coal power?

Unexpected Elements ·

2021/11/21

The political message from the COP meeting was a fudge over coal, but what does the science say? Surprisingly India seems to be on track to switch away from coal to renewables. We explore the apparent contradiction with Lauri Myllyvirta of the thinktank Centre for Research on Energy and Clean Air. Also a synchrotron for Africa, how such a project would give a boost to scientific development across the continent, with Marielle Agbahoungbata from the X-tech Lab in Seme City in Benin. Moriba Jah, who

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53:28

Bambi got Covid

Unexpected Elements ·

2021/11/14

Up to 8 percent of deer sampled in studies in the US were found to be infected with the SARS-Cov-2 Virus. Suresh Kuchipudi from the Department of Veterinary and Biomedical Sciences at Penn State University in the US says what they are seeing is a mixture of human to deer and deer to deer transmission of the virus. There is concern that its presence in animal reservoirs could lead to a new form of the virus emerging. Tropical forests and spread of zoonotic diseases And as the Cop26 meeting in Glasgow

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73:04

Jet fuel from thin air

Unexpected Elements ·

2021/11/07

Scientists in Switzerland have developed a system which uses solar energy to extract gases such as hydrogen and carbon dioxide from the air and turns them into fuels for transport. So far they have only made small quantities in experimental reactors, however they say with the right investment their alternatives to fossil fuels could be scaled up to provide a climate friendly way to power transport, particularly aviation and shipping. We speak to Aldo Steinfeld and Tony Patt from ETH Zurich and Johan

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62:04

Can we still avoid climate catastrophe?

Unexpected Elements ·

2021/10/31

Just a few days before COP26 opens in Glasgow, the World Meteorological Organisation reported record greenhouse gas levels, despite a fall in CO2 due to pandemic restrictions. The UN Environment Programme’s Emissions Gap Report also revealed that current country pledges will only take 7.5% off predicted greenhouse gas emissions by 2030, well below the 55% needed to limit global warming to 1.5C. Worse still, many large emission producers are not on track to meet their countries’ pledges. Rachel

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53:24

Red blood cells’ surprising immune function

Unexpected Elements ·

2021/10/24

We’ve talked a huge amount the past 18 months, for obvious reasons, about the way that white blood cells protect us from infection. But red blood cells – it’s probably among the earliest things I learned in human biology that they’re simple bags for carrying oxygen around the body. But over recent years, immunologist Nilam Mangalmurti, University of Pennsylvania, has been finding several clues to challenge that dogma – including molecules on the surface of red blood cells known from other parts of

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58:50

Wetlands under attack

Unexpected Elements ·

2021/10/15

Since its introduction four decades ago, Spartina alterniflora, a salt-water cordgrass from the USA, has been spreading along China’s coasts. Today, it covers nearly half of the country’s salt marshes. As the UN Biodiversity Conference COP 15 kicks off in China, we look at how this invasive plant species threatens native species in protected coastal wetlands. Featuring Yuan Lin, East China Normal University, and Qiang He, Fudan University. In January 2020, Barney Graham and Jason McLellan teamed up

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