Category: ScienceNews

Chanda Prescod-Weinstein is a theoretical physicist at the University of New Hampshire. It's her job to ask deep questions about how we — and the rest of the universe — got to this moment.

Her new book, The Disordered Cosmos: A Journey into Dark Matter, Spacetime, and Dreams Deferred, does exactly that. It's an examination of the science that underpins our universe and how the researchers seeking to understand those truths, in turn, shape the science.

As we close out Black History month, we revisit this conversation between Chanda and former Short Wave host, Maddie Sofia. Chanda explains that what she wants most is for every single person to have equal access to the same night sky that has mesmerized her all these years.

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The long rains of East Africa are forecast to fail again, for the third year running, precipitating a food crisis affecting millions. Science In Action explores the science of the drought, hears about new methods improving forecasts, and what is unusual about the region that makes it so vulnerable.

When we think of helium, for many of us balloons and squeaky voices come to mind. But the noble gas is critical for many aspects of modern life – and we’re facing a global shortage. Dr Annie Cheng and her colleagues at the University of Oxford are attempting to solve this by creating a model that has the potential to locate previously untapped reservoirs.

Image by Gerald Anderson/Anadolu Agency via Getty Images

Producer: Roland Pease Assistant Producer: Sophie Ormiston

When Abra Lee became the landscape manager at Hartsfield-Jackson Atlanta International Airport, she sought some advice about how to best do the job. The answer: study the history of gardening. That led to her uncovering how Black involvement in horticulture in the U.S. bursts with incredible stories and profound expertise, intertwined with a tragic past. She's now teaching these stories and working on a book, Conquer the Soil: Black America and the Untold Stories of Our Country's Gardeners, Farmers, and Growers. Abra Lee talks with former Short Wave producer Eva Tesfaye about uncovering Black horticultural history and several of the hidden figures who shaped it.

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“Ah, but a man’s reach should exceed his grasp,” the poet Robert Browning once opined, “or what’s a heaven for?” That’s not a very satisfying maxim for someone trying to lose weight, learn a language, or improve themselves in general on this earthly plane. But there are ways to maximize one’s grasping ability, and that’s an area where psychologist Ayelet Fishbach can help.

Fishbach, the Jeffrey Breakenridge Keller Professor of Behavioral Science and Marketing at the University of Chicago Booth School of Business, studies goals and motivations. It's work that saw her serve as president of the Society for the Science of Motivation and the International Social Cognition Network and to pen the 2022 book, Get it Done: Surprising Lessons from the Science of Motivation.

In this Social Science Bites podcast, she tells interviewer David Edmonds that one tip for setting goals is to make them concrete. So, for example, resolving to ‘being a good husband’ works, but ‘being happy’ does not. ‘Being happy’ is just too abstract. “You need to get to the level of abstractness that is motivating … but not too abstract that it is no longer connected to an action,” Fishbach explains, adding that there must be “a clear connection between the goal and the means.”

However, she continues, research suggests that people -- while focused on the ends -- tend to scrimp on the means. Fishbach notes research on MBA students found they were willing to pay $23 for a particular book – but only willing to pay $11 for a tote bag that they knew also contained the book. The value of the bag, which was negligible but still extra step to getting the book, was therefore negative. “Which makes no sense,” she acknowledges, “but it illustrates the point.”

Goals, she says, should be things we can “do,” what we can achieve, as opposed to prohibitions on actions, those “do nots” that describe what we should avoid. “Do” prompts, she continues, “are more intrinsically motivating. You are more excited about them. It feels good and right.” Plus, focusing on what we’re avoiding puts that thing in front of mind – which makes it harder to ignore.

Fishbach calls for measuring your “do” activities, setting targets. She cites a study that saw marathon running times in the United States were not being evenly distributed, but clumped around just-before milestone times like three-and-a-half or four hours, suggesting runners pushed themselves to hit their personal targets.

And where there are targets, there can be rewards. “Rewards work better than punishments,” she says, “but they don’t always work in the way they were intended to work.” If we incentivize the wrong things, behavior bends toward the incentive rather than the underlying goal.

Oddly enough, “uncertain incentives seem to work better than known ones." Fishbach was part of a research team that saw people would work harder for a $1 or $2 prize, with the amount determined by a coin flip, than they were for a $2 guaranteed prize. “The excitement of resolving uncertainty is always better than the reward you are getting.”

Other topics Fishbach addresses in this episode include internal motivations (immediate returns trumped longer-term rewards), how to sustain motivation, and whether we truly learn more from failure than success.

As a kid, Clarice Phelps dreamed of being an astronaut, or maybe an explorer like the characters on Star Trek. Her path to a career in science turned out to be a bit different than what she expected, including lengthy stints on a nuclear-powered aircraft carrier. But that path led her to being a part of something big: the discovery of a new element on the periodic table.

Clarice talks to Short Wave co-host Aaron Scott about her role in creating Tennessine, one of the heaviest elements known to humankind.

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Population geneticist Dr. Janina Jeff is the host and executive producer of In Those Genes, a hip-hop inspired podcast that uses genetics to uncover the those lost identifies of African descended Americans through the lens of Black culture.

Short Wave co-host Emily Kwong speaks with Janina about what a person's genetic ancestry test does and does not reveal, and the complicated intersection of genetics, history and race.

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This week, the Environmental Protection Agency (EPA) will hold a public hearing about its remediation plan for cleaning up chemicals in and around East Palestine, Ohio. It follows the derailment of a Norfolk Southern train carrying hazardous chemicals like vinyl chloride and butyl acrylate near the town earlier this month. Residents were temporarily evacuated from the area two days later to allow for a controlled burn of the chemicals. EPA health officials have been monitoring the air and water in the area and testing for chemicals as part of their human health risk assessment. We wanted to know: What goes into an assessment like that? And how does the EPA know if people are safe — now and long-term? To walk us through that assessment, we talked to Karen Dannemiller, an associate professor of environmental health science at The Ohio State University.

- Read EPA updates on the Ohio Derailment: https://bit.ly/3Y14qrx
- Read the EPA's remediation plan: https://bit.ly/3SrRk5g

The phone number to request free, private water testing is 330-849-3919.

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Cyclone Freddy has made landfall on Madagascar, leaving destruction in its wake. At the time this edition of Science In Action is going to air, Freddy is on course to reach Mozambique and South Africa.

Freddy, which has been gaining strength since it originally formed on the 30th of January, is the most powerful southern hemisphere cyclone on record. Professor Francois Engelbrecht provides the science behind the storm system. In the centre of our galaxy, an enormous cloud is heading towards the Milky Way’s supermassive black hole. Dr Anna Ciurlo tells us that this is a unique opportunity to study the influence of the black hole on the cloud’s shape and properties. We’ve heard a lot about balloons floating above Earth recently… but what about sending balloons to Venus?

That’s exactly what Dr Siddharth Krishnamoorthy is proposing in order to study Venus’s seismic activity. Recorders on a “floatilla” above the planet’s surface could listen into Venus-quakes and reveal Venus’s mysterious past. And closer to home, scientists have discovered a new layer in the Earth’s core. We journey into the very centre of the Earth with Professor Hrvoje Tkalčić, who tells Roland what the innermost inner core can teach us about our planet’s past.

And, If, like this week’s Crowdscience listener Lili, you’re an avid gymgoer, you may well have wondered where your fat disappears to when you exercise?

Well, the short answer is that we convert it to energy that powers a whole range of physical processes, from breathing to walking as well as lying down and doing nothing. But the science behind energy expenditure is a little more complicated than that.

Presenter Anand Jagatia pops on an exercise bike to have his metabolism measured, and learns that he may be relying on an entirely different source of fuel as he works up a sweat. But is all that hard work worth the effort it involves? Recent research suggests there's a limit to the number of calories us humans can burn, and that doing physical activity isn’t a sure-fire way to keep trim.

Even hunter-gatherers who walk 13,000 steps a day have the same metabolic rate as the average American. So if working out isn't the best way to lose weight, how about harnessing our own fat to tackle the complications of obesity? It used to be thought brown fat was exclusive to babies (and bears) but we now know adults have some of it too, and it seems to play a vital role in combatting a range of chronic diseases including hypertension and diabetes.

Image: NASA Earth Observatory image by Lauren Dauphin, using VIIRS data from NASA EOSDIS LANCE, GIBS/Worldview, and the Joint Polar Satellite System (JPSS). Producer: Roland Pease Assistant Producer: Sophie Ormiston

DNA has revealed potential animal COVID carriers at the Wuhan market, but what does that tell us about the start of the pandemic? Roland talks to two of the experts behind the new analysis: Dr Florence Débarre and Professor Eddie Holmes.

Also, we look into Europe’s grand new space ambitions. ESA director general Josef Aschbacher gives Roland the details of the space agency’s out-of-this-world plans.

And Beethoven's last DNA: a hairy story of his family and genetic afflictions. Dr Tristan Begg shares how the composer’s tresses unlocked new information about his life and death.

Inside our gut lives an entire ecosystem of bacteria and microbes, called the microbiome. In fact, the human body contains trillions of microorganisms, which outnumber our cells by ten to one. This means that technically, we are more microbe than human. But not only do these microbes rely on us to survive, we also rely on them too for vital bodily functions. So what impact do these trillions of microbes have on our health? That’s the question that’s been bothering CrowdScience listener Russell, from Canada.

Presenter Caroline Steel sets out to investigate. She visits the only museum dedicated to microbes in the world to explore what exactly these microbes inside us are, what they do and why we have so many of them inside our bodies. How important is our microbiome for our survival and what impact can it have on our physical health?

Caroline finds out what impacts our microbiome, what we can do to improve our inner ecosystem, and how our microbes can take a disturbing turn on us after we die.

Image credit: Eddie Holmes

Producer: Roland Pease Assistant Producer: Sophie Ormiston

If, like this week’s Crowdscience listener Lili, you’re an avid gymgoer, you may well have wondered where your fat disappears to when you exercise?

Well, the short answer is that we convert it to energy that powers a whole range of physical processes, from breathing to walking as well as lying down and doing nothing. But the science behind energy expenditure is a little more complicated than that.

Presenter Anand Jagatia pops on an exercise bike to have his metabolism measured, and learns that he may be relying on an entirely different source of fuel as he works up a sweat. But is all that hard work worth the effort it involves? Recent research suggests there's a limit to the number of calories us humans can burn, and that doing physical activity isn’t a sure-fire way to keep trim.

Even hunter-gatherers who walk 13,000 steps a day have the same metabolic rate as the average American. So if working out isn't the best way to lose weight, how about harnessing our own fat to tackle the complications of obesity? It used to be thought brown fat was exclusive to babies (and bears) but we now know adults have some of it too, and it seems to play a vital role in combatting a range of chronic diseases including hypertension and diabetes.

Presenter: Anand Jagatia Producer: Marijke Peters