Category: ScienceNews

For Alex “Sandy” Pentland, one of the best-known and widely cited computational social scientists in the world, these are halcyon days for his field.  One of the creators of the MIT Media Lab and currently the director of the MIT Connection Science and Human Dynamics labs, Pentland studies ‘social physics,’ which takes a data-centric view of culture and society.

In this Social Science Bites podcast, he tells interviewer Dave Edmonds about the origins of social physics in the barren days before the advent of widespread good data and solid statistical methods and how it blossomed as both a field and for Pentland’s own research. Now, with both plentiful data and very sophisticated statistics, “we can revisit this vision of understanding society, understanding culture, as an alive, evolving animal using these modern techniques.”

The key change, he explains, has been in the amount and the diversity of data -- even if that’s a scary thought from a privacy point of view, “But from a social science point of view it’s Nirvana. For the very first time you can look at complicated, real-time continuous interaction of many different groups carrying out real activities.”

Pentland’s own experimental trajectory reflects those advances, with his early work mediated as much by what was lacking (a good way to deal statistically with language) as what was at hand. This led him to study how much of an individual’s behavior was due to older, pre-language signaling and how much due to more modern linguistic structure. But with time and computational advances, his work ramped up to study how groups of people interact, even up to the scale of a city. That in turn created some fascinating and widely cited insights, such as the more diverse a city’s social ties the more successful, i.e. rich, e city will be.

Some of the methodology involved in doing computational social science is also explored in the podcast, as Pentland describes giving an entire community new mobile phones as one part of the data-gathering process (with privacy protecting institutional controls, he notes) even as “we pestered them with a million questionnaires of standard social science things” during the same study period.

Pentland is well-known in both the public and private spheres as a leading big data researcher, with Forbes recently dubbing him one of the "seven most powerful data scientists in the world." In addition to his work at MIT, he chairs the World Economic Forum’s Data Driven Development council and has co-founded more than a dozen data-centered companies such as the Data Transparency Lab, the Harvard-ODI-MIT DataPop Alliance and the Institute for Data Driven Design. Among his disparate honors are as a 2012 best-article award from the Harvard Business Review,  winning the DARPA Network Challenge run as a celebration of the 40th anniversary of the internet, and being honored for his work on privacy by the group Patient Privacy Rights.

Is there a killer asteroid with Earth’s name on it? The dinosaurs ruled for many millions of years before coming to their violent end. Will humanity prevail or are we doomed to succumb like the dinosaurs? It’s a question that will keep you up at night. No wonder our listeners Zarin and Pablo wanted to know more.

To find out, Anand Jaggtia heads to Denmark to see first-hand the evidence for a giant asteroid impact, written into the rocks at Stevns Klint. And we will hear from scientists at Nasa who are keeping a careful eye out for asteroids on collision course with Earth. Also, we discover that asteroids have a lot to answer for, maybe even our own existence.

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk

Why can't we use energy from the waves of the sea to create all the electricity that we need? Listener Michael in Kingston, Jamaica wants to know. Living on a Caribbean island means he’s never far from the might of the ocean – so could it power his house?

Presenter Greg Foot heads to one of the world’s leading wave energy test locations, the coast of Cornwall in the UK, to find out. There, he witnesses the challenges of the marine environment, from metre high waves in a giant indoor test tank to being buffeted on a beach where a 25km cable runs beneath his feet to a grid-connected offshore test site. And find out if Greg’s plan to feel the power of the waves first-hand on a research boat works out – in the middle of winter, in the northern hemisphere.

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk

Picture: Waves, Credit: Oli Scarff/Getty Images

Most of us want to be nice. But is it all it's cracked up to be? It's a question that's been nagging at listener Tony in Illinois, USA, for over 25 years. While studying at university, the lecturer asked him whether competing or co-operating was the best strategy for success – essentially, does it pay to work together or should we sharpen our elbows and look after number one?

Nastaran Tavakoli-Far goes in search of answers. She talks to a local hero about why he puts his life on the line for others, and visits a neuroscientist to find out what happens in the brain when we help others. Her quest also leads her to question whether women really are the more co-operative sex and how an animal called a kudu might reveal how human co-operation evolved in the first place.

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk

(Image: John Cook from Hertfordshire Fire and Rescue Service. Credit: Anna Lacey / BBC)

How would a fourth dimensional being appear to humans?

"It would look just weird" is one way to answer the question 'How would a fourth dimensional being appear to humans?' But it's more complicated than that - theoretical cosmologist Andrew Pontzen describes how objects are viewed from one dimension to another, and how it might affect parking spaces.

Also on the programme: our panel of experts discuss bubble experiments, a theory that the Black Death was a virus, space elevators, algae as a biomass fuel, what affects the speed of digestion in our gut, a short definition of dark energy and the question is it true our DNA has alien properties?

With Helen Czerski, department of mechanical engineering, University College London; virologist Jonathan Ball, University of Nottingham; and cosmologist Andrew Pontzen, University College London.

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk.

(Image: Stripes and points of light, one guess what a 4th dimension might look like, Credit: Thinkstock)

What effect does air travel have on the climate? That is the question listener Neil sent CrowdScience from New Zealand. If you have ever looked up at the sky and seen the wispy white streaks that airplanes leave behind, then you are looking at one of the major environmental impacts of air transport – contrails.

To find out more, Anand Jagatia goes on a journey through the rugged, lava-ridden Icelandic landscape with earth scientist Thor and discovers how both natural events like volcanic eruptions as well as man-made acts of terror can shed light on the environmental impact of aircraft. Plus, we meet a man who tailgates 737 airliners to measure their emissions.

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk.

Between a series of high-profile shootings of black men by police and the election of Donald Trump by a bifurcated electorate, the racial divide in the United States has achieved a renewed public prominence. While discussion of this divide had faded since the election of Barack Obama, it’s an issue that has always been at the forefront of the scholarship of Harvard’s Jennifer Hochschild.

In this Social Science Bites podcast, Hochschild explains to interviewer David Edmonds some of the pertinent data points from her years of using quantitative and qualitative analysis to map the racial, ethnic and class cleavages in America’s demography.

The issues are devilishly difficult to address in, well, black-and-white terms, it turns out, as Hochschild repeatedly answers “yes and no” to various questions. Academics, she explains, tend to generalize too much about these issues, to focus too much on the role of the federal government to the detriment of state governments, and don’t pay enough attention to spatial variations: “Los Angeles doesn’t look like Dubuque, Iowa.”

She depicts a racial continuum of acceptance and opportunity, with whites and Asians at one extreme, blacks at the other, and other communities, such as Latinos and Muslims, populating the expanse in between. While the distance between the extremes seems to be as wide as it’s been for the last half century, she sees some hopes in the middle. She draws parallels for the modern Latino community with that of immigrants from Eastern and Southern Europe at the turn of the last century: they arrived as ‘lesser whites’ but at this point have full membership in the larger dominant community.

Hochschild talks specifically about the Muslim immigrant community in the U.S., with its wide range of homelands and ethnicities but a generally high level of education. She expects the community’s traditional low level of political activity to change dramatically in the near future. “My guess is that’s going to change over the next decade as they increasingly feel not only beleaguered but in real trouble. From my perspective, I hope there will be more alliances with other groups, but that remains to be seen”

Hochschild is the Henry LaBarre Jayne Professor of Government at Harvard University, where she focuses on African and African American studies. The author of several important books on race and politics, she was also the founding editor of Perspectives on Politics, published by the American Political Science Association, and was a former co-editor of the American Political Science Review. Earlier this year she completed her one-year term as president of the APSA.

Where did the first viruses come from? They have the potential to wipe out life on Earth. But could life on Earth itself have evolved from the first viruses? Like the chicken and the egg, there are fierce arguments about which came first and rival scientists get quite cross about it all.

We take a dip into the primordial soup of creation and try to answer listener Ian's excellent question. Along the way, we revisit medieval plagues, travel to Texas to the largest urban bat colony in the world and take a walk through the dense mosquito-infested Ugandan forest that gave its name to the Zika virus.

Plus, we reveal how a virus is responsible for the placenta. No virus, no placenta; no placenta, no humans?

Do you have a question we can turn into a programme? Email us at crowdscience@bbc.co.uk

This programme has been edited since broadcast to remove a brief reference to ‘bubonic plague’ being included in a list of viral diseases.

(Photo: HIV viruses attacking a Cell. Credit: ThinkStock)

How much electric energy storage would it take to run the average home for 24 hours? Also: When will it be economical to locally store several days of electric energy for our home? Listener Gus in Texas, USA, wants to know – especially because he’s one of many people around the world who sometimes face lengthy power cuts.

Presenter Marnie Chesterton takes Gus’s question to energy experts. She heads to two national research facilities: The National Grid Scale Energy Storage Lab at University College London, and the Joint Center for Energy Storage Research at Argonne National Laboratory near Chicago – which originated from the early stages of the Manhattan Project. On the way, Marnie finds out where the word ‘battery’ came from, discovers why our mobile phone batteries gradually die with age, and hears how the next generation of power storage could change the world.

Presenter: Marnie Chesterton Producer: Jen Whyntie

(Picture: Isolated cabin at night Credit: Ed Jones/AFP/GettyImages)

What do scientists think is outside our universe? Asks Rebecca Standridge from San Francisco in the US.

It’s a question which goes right to the limits of human understanding.

We look for the answer using balloons, bubbles and the world’s oldest radio telescope.

If you have a question about science that you'd like us to investigate email crowdscience@bbc.co.uk.

Photo: Lovell telescope Jodrell Bank