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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

68:29

Australia’s extreme fire season

Unexpected Elements ·

2020/01/12

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 may

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61:23

Adapting California

Unexpected Elements ·

2020/01/05

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. What is empathy? This week’s question comes from Maria in Amsterdam who has noticed that when one of her friends is in pain, she feels their pain too, literally

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53:31

Gaming climate change

Unexpected Elements ·

2019/12/29

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 ice,

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53:34

Understanding the Anak Krakatau eruption

Unexpected Elements ·

2019/12/22

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. As CrowdScience celebrates its third birthday, the team takes time to revisit some of our early episodes, and catch up with listeners to discover if the answers we uncovered changed the course of their lives? We hear from Zach, who has learned to let go of a

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56:13

White Island volcano eruption

Unexpected Elements ·

2019/12/15

From 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 Institution for Science in Washington DC tells Roland about the research area

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71:13

CRISPR babies scandal – more details

Unexpected Elements ·

2019/12/08

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.66 million years

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56:22

New Malaria target

Unexpected Elements ·

2019/12/02

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.Science fiction is full of people settling on distant

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64:33

Politics and Amazonia’s fires

Unexpected Elements ·

2019/11/24

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 after

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56:38

Australia burning

Unexpected Elements ·

2019/11/17

Australia’s annual wild fires have started early this year, drought is a factor but to what extent is ‘Bush fire weather’ influenced by climate change?A two million year old fossil tooth reveals some biological answers to who its owner was.Why Climate change may have killed off the world’s first superpower And a hologram produced from sound waves.Can machines read our minds? We go in search of the latest efforts to connect brains to computers. We learn how researchers are combining brain scans with

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60:01

Climate in crisis

Unexpected Elements ·

2019/11/10

Pledges to reduce greenhouse gas emissions are largely unachievable says a major audit of commitments to the Paris Climate Accord. Air pollution in Delhi is so bad, breathing the toxic particles has been likened to smoking. Can a scientific assessment of the multiple causes help provide a way forward? We examine a new way of making new plastic – from old plastic. And why sending some stem cells to the international space station might help astronauts travel further. We’re all familiar with the

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62:47

Wildfires and winds in California

Unexpected Elements ·

2019/11/03

The Santa Ana in the south, and the Diablo in the north, are winds that are fuelling the terrible fires raging in California this week. They’re also blamed for bringing down power lines that sometimes start the fires. Roland Pease talks to Janice Coen of the National Center for Atmospheric Research NCAR who has been developing a highly detailed model to forecast how wind, mountains, and flames interact during a wildfire. The glaring gaps in human genetics are in Africa – much overlooked because the

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72:28

Is quantum supremacy ‘garbage’?

Unexpected Elements ·

2019/10/27

A quantum computer has performed a calculation considered impossible for conventional computers, but how meaningful is the result? As our guest reveals, this quantum state can be hugely significant and garbage – at the same time. Also we look at a new method of gene editing, which avoids cutting up DNA, get to grips with where the worlds worms live and watch elements being created in distant solar collisions.Listeners Michael and Ricky have been walking a tributary of the River Thames in London, UK

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61:59

Malaria, origins and a potential new treatment

Unexpected Elements ·

2019/10/20

A variety of malarial parasites have existed amongst the great apes for millennia, we look at how one of them jumped species and why humans became its preferred host. And from Antarctica we hear about a potential new treatment for malaria found in a deep sea sponge. We also look at why improved monitoring is changing our perceptions of earthquakes and follow the story of an endangered Polynesian snail.What exactly is the relationship between mathematics and reality? That’s the impossibly difficult

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56:49

From batteries to distant worlds

Unexpected Elements ·

2019/10/13

Nobel prizes this week went to a range of discoveries that you might be familiar with, in fact you might be using one of them right now – the lithium ion battery. The scientists credited with its Invention got the chemistry prize. And the tantalising prospect of life on other planets plays into the physics prize win.We see what salamanders have to offer in the treatment of arthritis.Human life expectancy has been increasing for decades. In many developed countries, we can now expect to live into our

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64:29

Global climate inaction

Unexpected Elements ·

2019/09/29

This week’s IPCC report on the state of the world’s climate looks very much like their earlier reports on the subject. The document cautiously expresses a picture of a future with greater climate extremes. Activists are frustrated by the lack of action. We look at why the scientific message is often hampered by politics. Fish could provide micronutrients to the world poor, but as we’ll hear this would need a major shift in commercial fishing practices globally.Baby bottles from thousands of years

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66:08

South East Asia choking - again

Unexpected Elements ·

2019/09/25

Staying indoors might seem a good way to avoid air pollution, but scientists studying the fires in Indonesia have found there is little difference between the air quality in their hotel room and the atmosphere outside. Both levels are high enough to be considered dangerous for human health. To add to the problem, fires continue to burn underground in the peaty soil long after they were started. In the Arctic ice melt this summer has been particularly severe, however the picture in complicated by

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60:05

Embryoids from stem cells

Unexpected Elements ·

2019/09/15

Scientists know very little about the first few days of the life of a human embryo, once it's been implanted in the womb. Yet this is when the majority of pregnancies fail. Professor Magdalena Zernika-Goetz at Cambridge University is a leader in the field of making 'model embryos' in both mice and humans. Model embryos until now have been grown in the lab from donated fertilised eggs, but these are hard to come by and governed by strict laws and ethical guidelines. Now researchers in the University

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62:57

New evidence of nuclear reactor explosion

Unexpected Elements ·

2019/09/07

An isotopic fingerprint is reported of a nuclear explosion in Russia last month. Researchers ask people living in the area or nearby to send them samples of dust or soil before the radioactive clues therein decay beyond recognition. Also, a near miss between an ESA satellite and a SpaceX Starlink module in crowded near space strengthens the case for some sort of international Space Traffic Management treaty, whilst in the arctic circle, melting permafrost is disinterring the graves of long-dead

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63:19

Nanotube computer says hello

Unexpected Elements ·

2019/08/31

A computer processor made of carbon nanotubes is unveiled to the world. Also, the continuing quest for nuclear fusion energy, and the stats on crocodile attacks since the 1960s.Satellites have transformed our lives, giving us digital communications, navigation and observations of Earth, and even an artificial place to live above the atmosphere: The International Space Station. But, would more of these satellites and stations help us get back to the Moon, as well as further into the solar system

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68:25

Amazonian fires likely to worsen

Unexpected Elements ·

2019/08/24

As fires across the amazon basin continue to burn, we speak to the researchers watching from space and from the ground. Also, new pictures back from the surface of asteroid Ryugu thanks to Germany’s MASCOT lander, part of the Japanese Hyabusa2 mission, give insights into the clay from which the solar system was originally formed, and Greenland’s top geologist gives his valuation of his native island for prospective purchasers. Many of us struggle to motivate ourselves to carry out certain tasks,

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322 results

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