A cacophony of singing and screaming creatures’ accents are explored to answer: Can animals of the same species from different places communicate with each other? Presenter Geoff Marsh tries to identify how different these calls really sound for CrowdScience.
From wolves to birds to whales and chimpanzees, most animals use sound to communicate, but if groups in different places vocalise in different ways, they may not be able to communicate with others.
CrowdScience questioner, Kitty, sets us on an exploration of the vast and varied world of animal communication with inspiration from her dog Monty.
Presenter: Geoff Marsh
Producer: Rory Galloway
(Photo: Three wolves howling on a cold day. Credit: Getty Images)
From worms who time their mating ritual with an inner lunar calendar, to how full moons could cause cows to give birth early. Listener Andreas sends CrowdScience on a mission to separate fact from fiction.
Picture: The moon rises over Kadam mountain in Uganda, on January 31, 2018, during the lunar phenomenon referred to as the 'super blue blood moon'. Credit: Yasuyoshi Chiba / AFP / Getty Images
Scientists have been searching for dark matter for 80 years, so CrowdScience wondered whether they could find it faster. Armed with a boiler suit, hard hat and ear defenders, Marnie Chesterton travels over a kilometre underground into a hot and sweaty mine to see how we could catch dark matter in action. She investigates various theories as to what it might be with popping candy and gazes at galaxies to determine how we know it exists in the first place. But most importantly, she questions whether it really matters. And, as our Singaporean listener Koon-Hou askes, what impact would finding it have on our everyday lives?
Presenter: Marnie Chesterton
Producer: Graihagh Jackson
(Photo: Finding dark matter could have galactic implications. Credit: Getty Images)
Carbon is special, but is it necessarily the unique building block of life in the universe? Science fiction has long speculated on non-carbon biochemistries existing in the universe – notably in the work of authors such as Isaac Asimov as well as in the popular American TV series Star Trek, which once featured a rock-munching, silicon-based life form called ‘Horta’.
Marnie Chesterton explores the real science behind this intriguing idea and wonders whether in the current search for Earth-like planets elsewhere in the galaxy, we should be looking at completely different possible sets of rules when it comes to the hunt for life?
Producer Alex Mansfield
Presenter Marnie Chesterton
(Photo: Saturn viewed from Titan moon. Credit: Getty Images)
The Western feud over “nature vs. nurture” dates back at least to an essay by John Locke in 1690. The idea that it’s an absolute binary – that our actions are determined solely by one or the other – is thankfully passé. And yet, in an academic setting, with scholars safe in their silos, the tension continues in practice if not in conversation.
For a bit of anecdotal evidence, look at Melinda Mills, the head of department and Nuffield Professor of Sociology at Oxford University. She studied the sociology and demography of families and family formation – things like when to choose to have a child, what a women’s age is when she first gives birth, or the number of children someone might have. “I was,” she tells interviewer David Edmonds in this Social Science Bites podcast, “looking at them in a very socially deterministic way. I was looking at things such as childcare institutions or gender equality or the kind of jobs that women and men have, and was childcare available and affordable and ... I was using those as explanations and predictors.
“And then I met some biologists and geneticists.”
Over drinks that day, these fellow researchers made fun of Mills: “This is Melinda and she studies fertility, but she doesn’t think it has any biological basis.” Much hilarity ensued. But the gibes bore a pleasant fruit – Mills broke free of the limits on her scholarship with which she had shackled herself. Her studies and collaborations now combined social science and molecular genetics; she now studies ‘sociogenomics,’ with a particular emphasis on how these interplay in the areas of inequality and life course. In that vein, she is the principal investigator of the SOCIOGENOME project and the ESRC National Centre for Research Methods SOCGEN project.
She notes that each part of the triad – social scientists, biologists and geneticists bring their real science to the table. “Wellbeing, depression, reproductive choice – [social scientist] are very good at measuring that. We then work with biologists and geneticists, who determine genetic loci, and then with biologists, who determine the biological function of those genes.
“As social scientists, we then create a score, your ‘reproductive score,’ and we add those to our statistical models together with the social science variables -- the usual suspects lie your family background or your partner or educational level – and we add those together with the genetic data and we look at the interaction between those.” And, as you’ll learn, there can be surprises for all concerned. Geneticists, for example, might assume that genetic loci are universal ... but are they?
The effort also harnesses the big data of genetics technology, tapping into databases like the UK Bio Bank or the direct-to-consumer testing services like 23andMe.
How far can you see? A few kilometres down the road? Or do you struggle to see past the end of your own nose? Well one listener thinks he might be able to see 15 quintillion miles away... but can he really? Marnie Chesterton and Bobbie Lakhera are on the case for this week’s multi-question human body special. As well as delving into the power of vision, they also discover why male mammals have nipples despite not needing to breastfeed, and Marnie puts herself in a giant refrigerator in the name of finding out why some people feel the cold more than others.
Meet the entrepreneurs turning bugs into food and get top tips on how to cook them. In this week’s episode we return to the topic of edible insects and the story of Kahitouo Hein’s caterpillar factory in Burkina Faso, West Africa. Kahitouo is trying to turn a traditional food like the shea caterpillar, available for just a few weeks a year, into a year-long sustainable staple for the whole population.
We also put your questions about edible insects directly to the researchers in Burkino Faso. Discover the best way to cook a bug, explore the curious effects of hornet venom and find out whether eating insects is better for the environment then eating red meat.
Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk
Presenter: Anand Jagatia
Producer: Louisa Field
(Photo: Worker at Kahit’s factory cooking caterpillars)
Most of us instinctively know when someone’s singing and when they’re talking. But since music and speech are both just sounds, how do our brains tell them apart? This week’s question comes from Eugene, a music teacher in Northern Ireland, who often hears music in people’s speech, and wonders why.
Step forward, the ‘speech-to-song illusion’. This curious phenomenon means that when certain spoken phrases are repeated, they turn into music as if by magic. We talk to the Diana Deutsch, the scientist who discovered this illusion, and find out what it reveals about how the brain is adapted to understand both music and speech.
But are some languages more musical than others? Many people around the world speak tone languages, where the pitch of a word affects its meaning. One such language is Dinka, spoken in South Sudan; we meet a Dinka speaker and hear how respecting the melody of the language is essential when writing songs.
Dogs have been living and working with humans for thousands of years. But they’re much more than just pets. As any dog owner will tell you, the bond we have with our canine friends is often so strong that they feel more like family.
So how is it that dogs have come to fit so seamlessly into human life?
That’s what CrowdScience listener Peter Jagger in the UK wants to know, and Marnie Chesterton is off to sniff out some answers. She starts by revisiting a previous episode of CrowdScience based in Sweden, where she saw the dog-human bond come alive during a moose hunt. She then heads to the Dog Cognition Centre in Portsmouth to discover how a unique and often unconscious communication system helps our dogs to understand us. Finally, Marnie finds out about the fate of dogs that are no longer wanted by their humans. After thousands of years of domestication, can they ever live without us?
Presenter: Marnie Chesterton
Producer: Anna Lacey
(Photo: Image of young girl with her dog, alaskan malamute. Credit: Getty Images)
That some people are just naturally gifted at mathematics is pretty well accepted as conventional wisdom. With enlightened teaching we can all become adequate at math, or maths, and should set expectations accordingly. That, says Jo Boaler, who is a professor of mathematics education at Stanford University, is hogwash. Although she uses the more refined terminology of calling such thinking “a myth.”
“The neuroscience is showing us petty clearly that there’s no such thing as a maths brain, even though so many people believe that, particularly in the Western culture,” she tells interviewer David Edmonds in this Social Science Bites podcast. She doesn’t fully reject the notion about enlightened teaching, though, only the bit about merely being adequate: “If you were taught the right way ... you could excel at all levels of maths in school.”
She describes how brain pathways are formed when we learn something, and the agglomeration of those pathways are what makes one adept, and not some inherent expertise. “This isn’t to say everyone is born with the same brain,” Boaler explains, “but experiences we have much more potential to shape brains than anything we’re born with. What we’re born with is really eclipsed by the millions of experiences we have.”
Her own experiences. Apart from once having been a mathematics teacher in London comprehensive schools, include following hundreds of students over many years in both the United Kingdom and the United States. Some of those students sitting in rows in traditional classrooms, others actively exploring mathematical concepts while untethered from desks. This research has enabled to bust a number of maths myths, such as that boys are better at math than girls – turns out that boys do better at testing, but not in school performance. Boaler notes that mindset plays a key role in learning, and those afraid of making a mistake don’t benefit from one of the most productive ways of learning, which is making a mistake.
In this podcast, she also details how timed tests actually inhibit the brain from working, and that even adults use (virtual) finger in mathematics, which plays out positively for musicians.
In addition to her role at Stanford, Boaler is the faculty director of the math teaching incubator youcubed and the author of the first ‘massive open online course’ on mathematics teaching and learning. She was also the Marie Curie Professor of Mathematics Education at the University of Sussex, a fellow at the Center for Advanced Study in the Behavioral Sciences at Stanford, and has written nine books, including the 2015 bestseller Mathematical Mindsets.
