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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

60:01

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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73:55

Cracking the case of the Krakatoa volcano collapse

Unexpected Elements ·

2019/08/18

Scientists this week are on expedition around the volcano Anak Krakatoa, which erupted and collapsed in 2018 leading to the loss of some 400 lives on the island of Java. The scientists, including David Tappin and Michael Cassidy, are hoping that their survey of the seafloor and tsunami debris will allow them to piece together the sequence of events, and maybe find signs to look out for in the future.Wyoming Dinosaur trove The BBC got a secret visit to a newly discovered fossil site somewhere in the

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63:08

The birth of a new volcano

Unexpected Elements ·

2019/05/26

A new undersea volcano has appeared off the coast of East Africa. The sea floor between Madagascar and Mozambique has become increasingly seismically active in the last year. As well as the appearance of this active volcano, local islands are now experiencing frequent earthquakes. The causes of Indonesia’s Palu Bay tsunami last year are being examined thanks to social media. Videos taken as the tsunami hit have been analysed to determine wave heights and speeds and suggest possible causes

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313 results

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