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PODCAST

CrowdScience

BBC World Service

We take your questions about life, Earth and the universe to researchers hunting for answers at the frontiers of knowledge.

science

All Episodes

36:43

Do animals have consciousness?

CrowdScience ·

2020/06/19

What exactly it means to be conscious has long been a question of profound debate amongst philosophers, and more recently, scientists. There are no easy answers, and it gets even trickier when you start asking whether animals are conscious: how can you find out about their subjective experience when they can’t tell you about it?Never afraid to tackle the impossible, CrowdScience is looking for answers after listener Natalie got in touch. She has lived with her cat for years and has a strong sense

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36:57

Were my atoms once your atoms?

CrowdScience ·

2020/06/12

We were bowled over by a question from one CrowdScience listener in Australia wants to know how likely it is that the atoms in his body have been used in someone else’s body? We all like to think we are unique; no one is quite like us. But is that really true?Presenter Marnie Chesterton tackles Moshe’s question with help from every area of science. From geologists helping us work out how many atoms are on the Earth’s surface to biologists helping us work out how many atoms each body uses. Perhaps we

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32:59

Would you risk your life to save another?

CrowdScience ·

2020/06/10

Have you ever broken up a fight? Or pushed someone out the way of an oncoming vehicle, only to be hit by it yourself? Most of us probably haven’t taken as many risks as listener Alix, who has put herself in peril to save strangers on several occasions, and she wants Crowdscience to investigate why. At a time when medical professionals have to weigh up the personal dangers of working on the frontline of the Coronavirus crisis, it’s a particularly timely question. Marnie Chesterton finds out why it’s

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45:05

Why can’t you tickle yourself?

CrowdScience ·

2020/05/29

This week the kids take over. Our younger listeners are as curious as their parents, it seems, so presenter Marnie Chesterton seeks out the finest minds and attempts to answer a raft of their science questions, including why can’t you tickle yourself? Why don’t our eyebrows grow as long as the hair on our heads? Not content with humankind, these whizz kids have been pondering deeply about other animals. Ava, 9, from the UK wants to know if any other animals kill for fun, like some humans do.

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30:56

How does a language begin?

CrowdScience ·

2020/05/22

There are over 7000 living languages on earth today. These mutually unintelligible means of communication are closely associated with different groups' identities. But how does a new language start out? That’s what listener BK wants to know. BK lives on one of the islands of the Philippines, where he speaks three languages fluently and has noticed there is a different language on almost every island. Presenter Anand Jagatia finds language experts from around the world who tell him about the many

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39:36

Does my toilet make sense?

CrowdScience ·

2020/05/15

Despite being a universal need, talking about our toilet use and the infrastructure that aids us remains somewhat taboo. Whilst sectors like telecommunications and computing have undergone rapid transformations over the past century, the flush toilet and wastewater system have mostly remained unchanged. CrowdScience listeners Linda and Allison wonder if flush toilets – and the clean water used to wash waste away - make economic or environmental sense. So CrowdScience presenter Marnie Chesterton

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31:24

What is the smallest particle?

CrowdScience ·

2020/05/08

What is the smallest particle of matter? How does radiation affect our bodies? And, how is particle physics useful in our everyday lives?CrowdScience takes on particle physics questions from listeners all over the world. Marnie Chesterton and Anand Jagatia get help from particle physicists from the Large Hadron Collider at CERN and medical physicist Heather Williams. Presented by Marnie Chesterton and Anand Jagatia Produced by Cathy Edwards, Jen Whyntie and Louisa Field (Photo: Particle collider,

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34:34

How do I learn maths when school’s shut?

CrowdScience ·

2020/05/01

What’s the importance of zero, and how was it discovered? How do scientists calculate Pi’s infinite digits? Why do so many people find maths difficult – and what’s the most difficult thing in maths?CrowdScience takes on a whole bunch of questions sent in by high school students in Spain. Like many children all over the world, their school is currently closed due to the coronavirus lockdown, but lessons continue at home. So how are their studies going, and can CrowdScience help out?We attempt to

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33:16

Why do you sweat more than me?

CrowdScience ·

2020/04/24

If you're an exercise fan, you'll know that sweating is how our bodies keep us cool, but how much water we lose and which bits of us get wettest depend on a whole host of factors. Jamaican listener Andre wants to know why he sweats in a heart-shape when he hits the gym, and we find out how everything from the clothes he wears to the moves he's doing explain his unusual perspiration patterns. In Kenya we meet a woman whose permanently clammy hands cause her to drop her mobile phone, and sweaty feet

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26:54

What makes a spider spin a web?

CrowdScience ·

2020/04/23

If you have ever watched a spider as it works to build a web, spiralling inwards with a thread of silk, that intersects each glistening spoke with a precise touch of the foot, you will know that it is a remarkably complex behaviour. In this episode, presenter Geoff Marsh dives into the minds of spider-constructors as they build their webs. CrowdScience listener Daan asked us to find out how spiders can build webs without ever being taught how to do it. Are they just little robots controlled

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26:43

How can I reduce stress?

CrowdScience ·

2020/04/10

Listener Keith from Lincolnshire wants to know how to reduce stress as he is under extreme pressure as a firefighter. Not only does he have to cope with the stress of responding to emergency situations but he has to do it while wearing challenging breathing equipment.We all experience times of stress, especially given the current situation, our chest starts to feel tight and our breathing becomes shallow. Claudia Hammond – presenter of BBC World Service programme Health Check – explains steps we

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26:27

Will a placebo boost my sports performance?

CrowdScience ·

2020/04/03

In medicine, it’s long been recognised that a placebo, a sham medicine or treatment, can have a powerful positive effect on a patient’s health. Part of that effect relies on a person’s belief that an inactive substance or treatment (for example, a sugar pill) is in fact an active drug. Placebos come in many forms, and the scientific study of placebo is an active area of research. With this in mind, CrowdScience listener Nigel got in touch to ask if can placebos be used to improve sports

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36:49

Can science explain why I love shopping?

CrowdScience ·

2020/03/27

If you've ever felt the urge to shop till you drop, then you may already know about some of the clever ways retailers convince us to consume. From flash sales to so-called unbelievable offers, there are a whole range of techniques aimed at encouraging us to flash the cash. Listener Mo works in marketing, so knows more than most about the tricks of the trade - but he wants CrowdScience to investigate how neuroscience is being used to measure our behaviour and predict what we’ll buy. Marnie Chesterton

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33:08

Can I trust DNA ancestry tests?

CrowdScience ·

2020/03/20

Many of us are fascinated by our ancestry: knowing where our families came from can give us a sense of identity and roots. Tracing your family tree is a time-honoured tradition, but several companies now sell DNA tests that offer you insights into your heritage: so you might find out you’re 70% Nigerian, 39% Italian, or 11% South Asian, for example.There’s no doubt that genes contain clues about your family history, but how reliable are these commercial tests? That’s what CrowdScience listener Karen

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30:13

What are scientists doing about coronavirus?

CrowdScience ·

2020/03/13

Since the outbreak of a new strain of coronavirus late last year, health workers and governments have been rushing to limit transmission by deploying containment tactics and anti-contamination campaigns. But, as the virus spreads around the world, what are scientists doing to help our bodies fight off or resist this new infectious disease? Viruses that cause human disease can be notoriously tricky to tackle. They don’t respond to antibiotics, can spread rapidly between human hosts, and even evolve

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3:53

Introducing 13 Minutes to the Moon Season 2

CrowdScience ·

2020/03/09

Jump on-board a doomed mission to the Moon. Apollo 13: the extraordinary story, told by the people who flew it and saved it. Search for 13 Minutes to the Moon wherever you get your podcasts. #13MinutestotheMoon

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31:32

Why are we obsessed with crime?

CrowdScience ·

2020/03/06

Why are we obsessed with crime? Kay from Hamburg, Germany asks as every Sunday evening Germans pile into their local pubs to watch Tatort, a hugely successful crime drama which has been running for 50 years. Presenter Marnie Chesterton starts with the science and speaks with psychologists to get to the bottom of where this obsession might come from. Have we evolved to have an innate obsession with danger or are we addicted to feeling fear?Or perhaps the dramatisation of

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37:01

What’s the weirdest weather?

CrowdScience ·

2020/02/28

Weather: wet, dry, cold, hot, sunny, windy or downright weird - there’s nothing quite like it as a conversation starter, from Austin to Jakarta. And judging from the large volume of emails about all things meteorological in the CrowdScience inbox, there’s plenty to talk about. What’s the weirdest weather on Earth, and how big a chance is there of it happening? Why does it always seem to rain on the days when we’re not working? And – conversely – is there any way we could make it rain when and

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36:16

Why do insects prefer to bite certain people?

CrowdScience ·

2020/02/21

A lovely day out in the countryside can be blighted when swarms of midges or mosquitos invite themselves to the party. A CrowdScience listener in New Zealand has noticed that, when sand-flies come a-biting, she and her daughter are targeted, while her husband and other daughter escape unharmed. She wants to know why some, but not all of her family become bait for insect bites. CrowdScience delves into a world of smells, called semiochemistry, which explores the aromas one animal uses to attract or

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37:46

What is cancer?

CrowdScience ·

2020/02/14

Cancer is the second leading cause of death in the world. Many of us will at some point in our lives be confronted with the disease – either by falling ill ourselves or through a family member or friend. For CrowdScience presenter Marnie Chesterton, the diagnosis would change her life. The range of cancer symptoms and mortality rates vary considerably. Not all cancers are fatal and in some cases, cancer ends up more like a chronic debilitating disease, resulting in patients eventually dying from

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490 results

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