Showing posts with label health. Show all posts
Showing posts with label health. Show all posts

Saturday, June 20, 2015

Big Picture Science for Monday 22 June 2015 - Skeptic Check: Evolutionary Arms Race

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Big Picture Science - Skeptic Check: Evolutionary Arms Race

ENCORE: It’s hard to imagine the twists and turns of evolution that gave rise to Homo Sapiens. After all, it required geologic time, and the existence of many long-gone species that were once close relatives. That may be one reason why – according to a recent poll – one-third of all Americans reject the theory of evolution. They prefer to believe that humans and other living organisms have existed in their current form since the beginning of time.

But if you’ve ever been sick, you’ve been the victim of evolution on a very observable time scale. Nasty viruses and bacteria take full advantage of evolutionary forces to adapt to new hosts. And they can do it quickly.

Discover how comparing the deadly 1918 flu virus with variants today may help us prevent the next pandemic. Also, while antibiotic resistance is threatening to become a major health crisis, better understanding of how bacteria evolve their defenses against our drugs may help us out.

And the geneticist who sequenced the Neanderthal genome says yes, our hirsute neighbors co-mingled with humans.

It’s Skeptic Check … but don’t take our word for it!

Guests:

This encore podcast was first released on March 31, 2014.

Permalink: http://radio.seti.org/episodes/Skeptic_Check_Evolutionary_Arms_Race

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, May 10, 2015

Big Picture Science for Monday 11 May 2015 - A Fundy Thing Happened













Big Picture Science - A Fundy Thing Happened

Get ready for déjà vu as you listen to some of our favorite interviews from the past year. It’s our annual fundraising podcast. Come for the great interviews, stay for the great interviews. Lend us your support along the way.

What’s for dinner? Maybe Soylent. Made by … people! We do a taste test. Then meet your gut microbes. They control your health and even your mood.

Get tips on how to talk to aliens, why you should keep an eye on government surveillance, and the future of 3D printing human tissue. Also, why extraordinary beliefs persist – including Holocaust denial – despite the persistence of evidence to the contrary.

And, global perspective: why Ebola won’t be the next big pandemic but sea level rise could wipe out coasts along Florida and Thailand.

Plus, we imagine life hundreds of years ago for the renegades on the rough seas, and what the world would be like had the dinosaurs not gone extinct.

All this and more on a special Big Picture Science podcast!

Guests:

Permalink: http://radio.seti.org/episodes/A_Fundy_Thing_Happened

Sunday, April 26, 2015

Big Picture Science for Monday 27 April 2015 - Invisible Worlds

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Big Picture Science - Invisible Worlds

ENCORE: You can’t see it, but it’s there, whether an atom, a gravity wave, or the bottom of the ocean … but we have technology that allows us to detect what eludes our sight. When we do, whole worlds open up.

Without telescopes, asteroids become visible only three seconds before they slam into the Earth. Find out how we track them long before that happens. Also, could pulsars help us detect the gravity waves that Einstein’s theory predicts?

Plus, why string theory and parallel universes may remain just interesting ideas … the story of the woman who mapped the ocean floor … and why the disappearance of honeybees may change what you eat.

Guests:

This encore podcast was first released on September 23, 2013

Permalink: http://radio.seti.org/episodes/Invisible_Worlds

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, March 15, 2015

Big Picture Science for Monday 16 March 2015 - Microbes: Resistance is Futile

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Big Picture Science - Microbes: Resistance is Futile

You are what you eat. Whether you dine on kimchi, carnitas, or corn dogs determines which microbes live in your stomach. And gut microbes make up only part of your total microbiome.

Find out how your microbes are the brains-without-brains that affect your health and even your mood. Also, why you and your cohorts are closer than you thought: new research suggests that you swap and adopt bugs from your social set.

Plus, the philosophical questions that are arise when we realize that we have more microbial DNA than human DNA.

And a woman who skipped soap and shampoo for a month to see what would grow on her.

Guests:

Permalink: http://radio.seti.org/episodes/Microbes_Resistance_is_Futile

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, December 28, 2014

Big Picture Science for Monday 29 December 2014 - Skeptic Check: Got a Sweet Truth?

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Big Picture Science - Skeptic Check: Got a Sweet Truth?

ENCORE: The sweet stuff is getting sour press. Some researchers say sugar is toxic. A new study seems to support that idea: mice fed the human equivalent of an extra three sodas a day become infertile or die. But should cupcakes be regulated like alcohol?

Hear both sides of the debate. Another researcher says that animal studies are misleading, and that for good health, you should count calories, not candy and carbs.

Plus, an investigative reporter exposes the tricks that giant food companies employ to keep you hooked on sugar, salt, and fat.

Also, a listener corrects our pronunciation of Neil Armstrong’s birthplace in the Sounds Abound episode.

It’s Skeptic Check … but don’t take our word for it!

Guests:

This encore podcast was first released on August 19, 2013

Permalink: http://radio.seti.org/episodes/Skeptic_Check_Got_a_Sweet_Truth_

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, December 21, 2014

Big Picture Science for Monday 22 December 2014 - Science Fiction True

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Big Picture Science - Science Fiction True

Don’t believe everything you see on TV or the movies. Science fiction is just a guide to how our future might unfold. It can be misleading, as anyone who yearns for a flying car can tell you. And yet, sometimes fantasy becomes fact. Think of the prototype cellphones in Star Trek.

We take a look at science that seems inspired by filmic sci-fi, for example scientists manipulating memory as in Sunshine of the Spotless Mind. And despite his famous film meltdown, Charleton Heston hasn’t stopped the Soylent company from producing what it calls the food of the future.

Plus, why eco-disaster films have the science wrong, but not in the way you might think. And, what if our brains are simply wired to accept film as fact?

Guests:

Permalink: http://radio.seti.org/episodes/Science_Fiction_True

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, December 14, 2014

Big Picture Science for Monday 15 December 2014 - Shocking Ideas

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Big Picture Science - Shocking Ideas

Electricity is so 19th century. Most of the uses for it were established by the 1920s. So there’s nothing innovative left to do, right? That’s not the opinion of the Nobel committee that awarded its 2014 physics prize to scientists who invented the blue LED.

Find out why this LED hue of blue was worthy of our most prestigious science prize … how some bacteria actually breathe rust … and a plan to cure disease by zapping our nervous system with electric pulses.

Guests:
  • Siddha Pimputkar – Postdoctoral researcher in the Materials Department of the Solid State Lighting and Energy Electronics Center under Shuji Nakamura, winner of the 2014 Nobel Prize in Physics, University of California, Santa Barbara
  • Jeff Gralnick – Associate professor of microbiology at the University of Minnesota
  • Kevin Tracey – Neurosurgeon and president of the Feinstein Institute for Medical Research in New York

Permalink: http://radio.seti.org/episodes/Shocking_Ideas

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, November 23, 2014

Big Picture Science for Monday 24 November 2014 - This Land Is Island

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Big Picture Science - This Land Is Island

ENCORE: There are many kinds of islands. There’s your iconic sandy speck of land topped with a palm tree, but there’s also our home planet – an island in the vast seas of space. You might think of yourself as a biological island … until you tally the number of microbes living outside – and inside – your body.

We go island hopping, and consider the Scottish definition of an island – one man, one sheep – as well as the swelling threat of high water to island nations. Also, how species populate islands … and tricks for communicating with extraterrestrial islanders hanging out elsewhere in the cosmos.

Guests:

This encore podcast was first released on January 9, 2012

Permalink: http://radio.seti.org/episodes/This_Land_Is_Island

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, October 26, 2014

Big Picture Science for Monday 27 October 2014 - Skeptic Check: Friends Like These

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Big Picture Science - Skeptic Check: Friends Like These

ENCORE: We love our family and friends, but sometimes their ideas about how the world works seem a little wacky. We asked BiPiSci listeners to share examples of what they can’t believe their loved-ones believe, no matter how much they hear rational explanations to the contrary. Then we asked some scientists about those beliefs, to get their take.

Discover whether newspaper ink causes cancer … if King Tut really did add a curse to his sarcophagus … the efficacy of examining your irises – iridology – to diagnose disease … and more!

Oh, and what about string theory? Is it falsifiable?

Guests:

This encore podcast was first released on March 25, 2013

Permalink: http://radio.seti.org/episodes/Skeptic_Check_Friends_Like_These

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, October 19, 2014

Big Picture Science for Monday 20 October 2014 - Tale of the Distribution

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Big Picture Science - Tale of the Distribution

We all have at least some musical talent. But very few of us can play the piano like Vladimir Horowitz. His talent was rarefied, and at the tail end of the bell curve of musical ability – that tiny sliver of the distribution where you find the true outliers. Outliers also exist with natural events: hurricane Katrina, for example, or the asteroid that wiped out the dinosaurs. Such events are rare, but they often have outsized effects.

In this hour we imagine the unimaginable – including the unexpected events labeled “black swans” – and how we weigh the risk for any of them. Also, how a supervolcano explosion at Yellowstone National Park could obliterate the western U.S. but shouldn’t stop you from putting the park on your vacation itinerary.

Guests:

Permalink: http://radio.seti.org/episodes/Tale_of_the_Distribution

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, October 12, 2014

Big Picture Science for Monday 13 October 2014 - Who's Controlling Whom?

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Big Picture Science - Who's Controlling Whom?

A single ant isn’t very brainy. But a group of ants can do remarkable things. Biological swarm behavior is one model for the next generation of tiny robots. Of course, biology can get hijacked: a fungus can seize control of an ant’s brain, for example. So will humans always remain the boss of super-smart, swarming machines?

We discuss the biology of zombie ants and how to build robots that self-assemble and work together. Also, how to guarantee the moral behavior of future ‘bots.

And, do you crave cupcakes? Research suggests that gut bacteria control what we eat and how we feel.

Guests:
  • David Hughes – Biologist, entomologist, Penn State University
  • Mike Rubenstein – Roboticist, Self-Organizing Systems Research Group, Harvard University
  • Wendell Wallach – Bioethicist, chair, Technology and Ethics Study Group, Yale University’s Interdisciplinary Center for Bioethics
  • Athena Aktipis – Cooperation theorist, Arizona State University and director of Human and Social Evolution, Center for Evolution and Cancer, University of California, San Francisco

Permalink: http://radio.seti.org/episodes/Who_s_Controlling_Whom_

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, August 31, 2014

Big Picture Science for 09/01/14 - Welcome to our Labor-atory

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Big Picture Science - Welcome to our Labor-atory

ENCORE: Hi ho, hi ho … it’s out with work we go! As you relax this holiday weekend, step into our labor-atory and imagine a world with no work allowed. Soft robots help us with tasks at home and at the office, while driverless cars allow us to catch ZZZZs in the front seat.

Plus, the Internet of Everything interconnects all your devices, from your toaster to your roaster to … you. So there’s no need to ever get off the couch. But is a machine-ruled world a true utopia?

And, the invention that got us into our 24/7 rat race: Edison’s electric light.

Guests:

This encore podcast was first released on August 26, 2013

Permalink: http://radio.seti.org/episodes/Welcome_to_Our_Labor_atory

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, August 24, 2014

Big Picture Science for 08/25/14 - ZZZZZs Please

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Big Picture Science - ZZZZZs Please

ENCORE: We’ve all hit the snooze button when the alarm goes off, but why do we crave sleep in the first place? We explore the evolutionary origins of sleep … the study of narcolepsy in dogs … and could novel drugs and technologies cut down on our need for those zzzzs.

Plus, ditch your dream journal: a brain scanner may let you record – and play back – your dreams.

And, branch out with the latest development in artificial light: bioluminescent trees. How gene tinkering may make your houseplants both grow and glow.

Guests:
  • Emmanuel Mignot – Professor of psychiatry and behavioral sciences, and director of the Stanford Center for Sleep Sciences and Medicine, Stanford University
  • Kyle Taylor – Molecular biologist at Glowing Plant
  • Jerry Siegel – Neuroscientist and professor of psychiatry, the University of California, Los Angeles
  • Jack Gallant – Professor of psychology and neuroscience, University of California, Berkeley

This encore podcast was first released on May 27, 2013

Permalink: http://radio.seti.org/episodes/ZZZZZs_Please

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, July 27, 2014

Big Picture Science for 07/28/14 - Replace What Ails You

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Big Picture Science - Replace What Ails You

Germs can make us sick, but we didn’t know about these puny pathogens prior to the end of the 19th century. Just the suggestion that a tiny bug could spread disease made eyes roll. Then came germ theory, sterilization, and antibiotics. It was a revolution in medicine. Now we’re on the cusp of another one. This time we may cure what ails us by replacing what ails us.

Bioengineers use advancements in stem cell therapy to grow red and white cells for human blood. Meanwhile, a breakthrough in 3D printing: scientists print blood vessels and say that human organs may be next.

Plus, implanting electronic grids to repair neural pathways. Future prosthetics wired to the brain may allow paralyzed limbs to move.

We begin with the story of the scientist who discovered the bacteria that caused tuberculosis, and the famous author who revealed that his cure for TB was a sham.

Guests:

Permalink: http://radio.seti.org/episodes/Replace_What_Ails_You

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, May 11, 2014

Big Picture Science for 05/12/14 - Smiley Virus

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Big Picture Science - Smiley Virus

For many, the word virus is a synonym for disease – diseases of humans, plants, and even computers. Ebola is an example: a virus with a big and terrifying reputation. And yet the vast majority of viruses are not only friendly, they are essential for life.

Find out how viruses make plant life in Yellowstone’s hottest environments possible, and fear your spinach salad no longer: a scientist recruits viruses to defeat E. coli bacteria.

Plus, a new study presents the disconcerting facts of just how far a sneeze travels, and viruses in another kind of culture: but is ours benevolent? Find out from the man who coined the term, “viral media.”

Guests:

Permalink: http://radio.seti.org/episodes/Smiley_Virus

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, May 04, 2014

Big Picture Science for 05/05/14 - Skeptic Check: What, We Worry?

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Big Picture Science - Skeptic Check: What, We Worry?

We all have worries. But as trained observers, scientists learn things that can affect us all. So what troubles them, should also trouble us. From viral pandemics to the limits of empirical knowledge, find out what science scenarios give researchers insomnia.

But also, we discover which scary scenarios that preoccupy the public don’t worry the scientists at all. Despite the rumors, you needn’t fear that the Large Hadron Collider will produce black holes that could swallow the Earth.

It’s Skeptic Check, our monthly look at critical thinking … but don’t take our word for it!

Guests:
Inspiration for this episode comes from the book, What Should We Be Worried About?: Real Scenarios That Keep Scientists Up at Night edited by John Brockman.

Permalink: http://radio.seti.org/episodes/Skeptic_Check_What_We_Worry_

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, April 27, 2014

Big Picture Science for 04/28/14 - Our Tasteless Show

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Big Picture Science - Our Tasteless Show

ENCORE: Imagine biting into a rich chocolate donut and not tasting it. That’s what happened to one woman when she lost her sense of smell. Discover what scientists have learned about how the brain experiences flavor, and the evolutionary intertwining of odor and taste.

Plus a chef who tricks tongues into tasting something they’re not. It’s chemical camouflage that can make crabgrass taste like basil and turn bitter crops into delicious dishes – something that could improve nutrition world-wide.

Meanwhile, are we a tasty treat for aliens? Discover whether we might be attractive snacks for E.T. And, out-of-this-world recipes from a “gAstronomy” cookbook!

Guests:

This encore podcast was first released on March 11, 2013

Permalink: http://radio.seti.org/episodes/Our_Tasteless_Show

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, April 20, 2014

Big Picture Science for 04/21/14 - Happily Confused

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Big Picture Science - Happily Confused

Do you feel happy today? How about happily disgusted? Maybe sadly surprised, or sadly disgusted? Human emotions are complex. But at least they’re the common language that unites us all – except when they don’t. A tribe in Namibia might interpret our expression of fear as one of wonderment. And people with autism don’t feel the emotions that others do.

So if you’re now delightfully but curiously perplexed, tune in and discover the evolutionary reason for laughter … how a computer can diagnose emotional disorders that doctors miss … and why the world’s most famous autistic animal behaviorist has insight into the emotional needs of cattle.

Guests:

Permalink:  http://radio.seti.org/episodes/Happily_Confused

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, April 13, 2014

Big Picture Science for 04/14/14 - That's Containment!

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Big Picture Science - That's Containment!

ENCORE: We all crave power: to run laptops, charge cell phones, and play Angry Birds. But if generating energy is easy, storing it is not. Remember when your computer conked out during that cross-country flight? Why can’t someone build a better battery?

Discover why battery design is stuck in the 1800s, and why updating it is key to future green transportation (not to mention more juice for your smartphone). Also, how to build a new type of solar cell that can turn sunlight directly into fuel at the pump.

Plus, force fields, fat cells and other storage systems. And: Shock lobster! Energy from crustaceans?

Guests:
  • Dan Lankford – Former CEO of three battery technology companies, and a managing director at Wavepoint Ventures
  • Jackie Stephens – Biochemist at Louisiana State University
  • Kevin MacVittie – Graduate student of chemistry, Clarkson University, New York
  • Nate Lewis – Chemist, California Institute of Technology
  • Alex Filippenko – Astronomer, University of California, Berkeley
  • Peter Williams – Physicist, San Francisco Bay Area

This encore podcast was first released on February 4, 2103

Permalink: http://radio.seti.org/episodes/That_s_Containment_
You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.

Sunday, March 30, 2014

Big Picture Science for 03/31/14 - Skeptic Check: Evolutionary Arms Race

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Big Picture Science - Skeptic Check: Evolutionary Arms Race

It’s hard to imagine the twists and turns of evolution that gave rise to Homo Sapiens. After all, it required geologic time, and the existence of many long-gone species that were once close relatives. That may be one reason why – according to a recent poll – one-third of all Americans reject the theory of evolution. They prefer to believe that humans and other living organisms have existed in their current form since the beginning of time.

But if you’ve ever been sick, you’ve been the victim of evolution on a very observable time scale. Nasty viruses and bacteria take full advantage of evolutionary forces to adapt to new hosts. And they can do it quickly.

Discover how comparing the deadly 1918 flu virus with variants today may help us prevent the next pandemic. Also, while antibiotic resistance is threatening to become a major health crisis, better understanding of how bacteria evolve their defenses against our drugs may help us out.

And the geneticist who sequenced the Neanderthal genome says yes, our hirsute neighbors co-mingled with humans.

It’s Skeptic Check … but don’t take our word for it!

Guests:

Permalink: http://radio.seti.org/episodes/Skeptic_Check_Evolutionary_Arms_Race

You can listen to this and other episodes at http://radio.seti.org/, and be sure to check out Blog Picture Science, the companion blog to the radio show.