Sunday, June 30, 2019

Big Picture Science for July 01, 2019 - Nailing the Moon Landing













Big Picture Science - Nailing the Moon Landing

Neil, Buzz, and Michael made it look effortless, but the moon landing was neither easy nor inevitable.  Soon after President Kennedy publicly stated the goal of sending Americans to the moon, NASA confessed that the chances of success were only about 50/50.   But on July 20, 1969, despite enormous difficulties, astronauts stepped onto the lunar regolith.

In this special anniversary episode, we go behind the iconic phrases and familiar photos to consider the errors, mishaps, and the Plan B contingencies that dogged the project, as well as hear of the hundreds of thousands of men and women who made Apollo 11 possible.

Guests:

Download podcast at - http://bigpicturescience.org/episodes/nailing-the-moon-landing

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

Sunday, June 23, 2019

Big Picture Science for June 24, 2019 - Animals Like Us













Big Picture Science - Animals Like Us

Laughing rats, sorrowful elephants, joyful chimpanzees.  The more carefully we observe, and the more we learn about animals, the closer their emotional lives appear to resemble our own.  Most would agree that we should minimize the physical suffering of animals, but should we give equal consideration to their emotional stress?  Bioethicist Peter Singer weighs in. Meanwhile, captivity that may be ethical: How human-elephant teamwork in Asia may help protect an endangered species.

Guests:

This podcast will be released this coming Monday at - http://bigpicturescience.org/

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

Monday, June 17, 2019

Big Picture Science for June 17, 2019 - You've Got Whale












Big Picture Science - You've Got Whale

(Repeat)  SMS isn’t the original instant messaging system.  Plants can send chemical warnings through their leaves in a fraction of a second.  And while we love being in the messaging loop – frenetically refreshing our browsers – we miss out on important conversations that no Twitter feed or inbox can capture. That’s because eavesdropping on the communications of non-human species requires the ability to decode their non-written signals.

Dive into Arctic waters where scientists make first-ever recordings of the socializing clicks and squeals of narwhals, and find out how climate shifts may pollute their acoustic landscape.  Also, why the chemical defense system of plants has prompted one biologist to give greenery an “11 on the scale of awesomeness.” And, you can’t see them, but they sure can sense one another: how communicating microbes plan their attack.

Guests:
  • Susanna Blackwell – Bio-acoustician with Greeneridge Sciences. Hear her recordings of narwhals here.
  • Simon Gilroy – Professor of botany, University of Wisconsin, Madison. His video of glowing green caterpillar-munched plants can be viewed here.
  • Peter Greenberg – Professor of microbiology, University of Washington, Seattle

This repeat podcast was previously released on 10/29/2018

Download podcast at - http://bigpicturescience.org/episodes/youve-got-whale

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

Tuesday, June 11, 2019

Big Picture Science for June 10, 2019 - It's Habitable Forming












Big Picture Science - It's Habitable Forming

(Repeat) There’s evidence for a subsurface lake on Mars, and scientists are excitedly using the “h” word.  Could the Red Planet be habitable, not billions of years ago, but today?  While we wait – impatiently – for a confirmation of this result, we review the recipe for habitable alien worlds. For example, the moon Titan has liquid lakes on its surface.  Could they be filled with Titanites?

Dive into a possible briny, underground lake on Mars … protect yourself from the methane-drenched rain on a moon of Saturn … and cheer on the missed-it-by-that-much planets, asteroids Ceres and Vesta.

Also, do tens of billions of potentially habitable extrasolar planets mean that Earth is not unique?

Guests:
  • Nathalie Cabrol – Planetary scientist, Director of the Carl Sagan Center for the Study of Life in the Universe at the SETI Institute
  • Jack Holt – Geophysicist, Lunar and Planetary Laboratory, University of Arizona
  • Jani Radebaugh – Planetary scientist and professor of geology, Brigham Young University
  • Marc Rayman –  Mission Director and Chief Engineer of NASA’s Dawn Mission
  • Phil Plait – Astronomer, blogger, and widely known as the Bad Astronomer

This repeat podcast was previously released on 08/13/2018

Download podcast at - http://bigpicturescience.org/episodes/its-habitable-forming

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

Sunday, June 02, 2019

Big Picture Science for June 03, 2019 - Creature Discomforts













(Repeat) Okay you animals, line up: stoned sloths, playful pandas, baleful bovines, and vile vultures.  We’ve got you guys pegged, thanks to central casting.

Or do we?  Our often simplistic view of animals ignores their remarkable adaptive abilities.  Stumbly sloths are in fact remarkably agile and a vulture’s tricks for thermoregulation can’t be found in an outdoors store.

Our ignorance about some animals can even lead to their suffering and to seemingly intractable problems.  The South American nutria was brought to Louisiana to supply the fur market.  But the species got loose and tens of millions of these rodents are destroying the environment.  It literally has a bounty on its tail.

Hear about research that corrects a menagerie of misunderstandings about our fellow furry, feathered, and scaly animals, and how getting over ourselves to know them better can have practical benefits. Will you still recoil from termites if you learn that they are relevant to the future of robots, global warming, and smart design?

Guests:

This podcast will be released this coming Monday at - http://bigpicturescience.org/

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

Tuesday, May 28, 2019

Big Picture Science for May 27, 2019 - Skeptic Check: Worrier Mentality













Big Picture Science - Skeptic Check: Worrier Mentality

Poisonous snakes, lightning strikes, a rogue rock from space.  There are plenty of scary things to fret about, but are we burning adrenaline on the right ones?  Stepping into the bathtub is more dangerous than flying from a statistical point of view, but no one signs up for “fear of showering” classes.

Find out why we get tripped up by statistics, worry about the wrong things, and how the “intelligence trap” not only leads smart people to make dumb mistakes, but actually causes them to make more.

Guests:

Download podcast at - http://bigpicturescience.org/episodes/skeptic-check-worrier-mentality

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

Sunday, May 19, 2019

Big Picture Science for May 20, 2019 - New Water Worlds













Big Picture Science - New Water Worlds

(Repeat) The seas are rising.   It’s no longer a rarity to see kayakers paddling through downtown Miami.  By century’s end, the oceans could be anywhere from 2 to 6 feet higher, threatening millions of people and property.  But humans once knew how to adapt to rising waters.  As high water threatens to drown our cities, can we learn do it again.

Hear stories of threatened land: submerged Florida suburbs, the original sunken city (Venice), and the U.S. East Coast, where anthropologists rush to catalogue thousands of low-lying historical and cultural sites in harm’s way, including Jamestown, Virginia and ancient Native American sites.

But also, stories of ancient adaptability: from the First American tribes of the Colusa in South Florida to the ice age inhabitants of Doggerland.  And, modern approaches to staying dry: stilt houses, seawalls, and floating cities.

Guests:

This podcast will be released this coming Monday at - http://bigpicturescience.org/

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

Wednesday, May 15, 2019

Big Picture Science for May 13, 2019 - Is Life Inevitable?













Big Picture Science - Is Life Inevitable?

A new theory about life’s origins updates Darwin’s warm little pond.  Scientists say they’ve created the building blocks of biology in steaming hot springs. Meanwhile, we visit a NASA lab where scientists simulate deep-sea vent chemistry to produce the type of environment that might spawn life.  Which site is best suited for producing biology from chemistry?

Find out how the conditions of the early Earth were different from today, how meteors seeded Earth with organics, and a provocative idea that life arose as an inevitable consequence of matter shape-shifting to dissipate heat. Could physics be the driving force behind life’s emergence?  

Guests:
  • Caleb Scharf – Director of Astrobiology at Columbia University, New York
  • Laurie Barge – Research scientist in astrobiology at NASA’s Jet Propulsion Laboratory
  • Bruce Damer – Research scientist in biomolecular engineering, University of California
  • Jeremy England – Physicist, Massachusetts Institute of Technology

Download podcast at - http://bigpicturescience.org/episodes/is-life-inevitable

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

Tuesday, May 07, 2019

Big Picture Science for May 06, 2019 - Rethinking Chernobyl













Big Picture Science - Rethinking Chernobyl

The catastrophic explosion at the Chernobyl nuclear power plant in April 1986 triggered the full-scale destruction of the reactor.  But now researchers with access to once-classified Soviet documents are challenging the official version of what happened both before and after the explosion. They say that the accident was worse than we thought and that a number of factors – from paranoia to poor engineering – made the mishap inevitable.  Others claim a much larger death toll from extended exposure to low levels of radiation.  But with nuclear energy being a possibly essential component of dealing with rising carbon dioxide emissions, how do we evaluate risk under the long shadow of Chernobyl?

Guests:

Download podcast at - http://bigpicturescience.org/episodes/rethinking-chernobyl

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

Sunday, April 28, 2019

Big Picture Science for Apr 29, 2019 - Identity Crisis












Big Picture Science - Identity Crisis

(Repeat) DNA is the gold standard of identification.  Except when it’s not.  In rare cases when a person has two complete sets of DNA, that person’s identity may be up in the air.  Meanwhile, DNA ancestry tests are proving frustratingly vague: dishing up generalities about where you came from rather than anything specific.  And decoding a genome is still relatively expensive and time-consuming.   So, while we refine our ability to work with DNA, the search is on for a quick and easy biomarker test to tell us who we are.

In this hour: the story of chimeras – people who have two sets of DNA; a reporter whose ancestry tests revealed she is related to Napoleon and Marie Antoinette; and the eyes have it in Somaliland, the first nation to use iris scans in an election.  Find out why your irises may be what ultimately distinguishes you from the crowd.

Guests:

This repeat podcast was previously released on 7/23/2018

This podcast will be released this coming Monday at - http://bigpicturescience.org/

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

Sunday, April 21, 2019

Big Picture Science for Apr 22, 2019 - Gained in Translation













Big Picture Science - Gained in Translation

Your virtual assistant is not without a sense of humor. Its repertoire includes the classic story involving a chicken and a road.  But will Alexa laugh at your jokes? Will she groan at your puns?

Telling jokes is one thing. Teaching a computer to recognize humor is another, because a clear definition of humor is lacking. But doing so is a step toward making more natural interactions with A.I.

Find out what’s involved in tickling A.I.’s funny bone. Also, an interstellar communication challenge: Despite debate about the wisdom of transmitting messages to space, one group sends radio signals to E.T. anyway. Find out how they crafted a non-verbal message and what it contained.

Plus, why using nuanced language to connive and scheme ultimately turned us into a more peaceful species. And yes, it’s all gouda: why melted cheese may be the cosmic message of peace we need.
Guests:

Download podcast at - http://bigpicturescience.org/episodes/gained-in-translation

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

Sunday, April 14, 2019

Big Picture Science for Apr 15, 2019 - Free Range Dinosaurs












Big Picture Science - Free Range Dinosaurs

(Repeat) Dinosaurs are once again stomping and snorting their way across the screen of your local movie theater.  But these beefy beasts stole the show long before CGI brought them back in the Jurassic Park blockbusters.  Dinosaurs had global dominance for the better part of 165 million years. Compare that with a measly 56 million years of primate activity. We bow to our evolutionary overlords in this episode.

Our conversation about these thunderous lizards roams freely as we talk with the paleontologist who discovered Dreadnoughtus – the largest land lizard unearthed to date.  Kenneth Lacovara asks that we please stop using the term “dinosaur” to refer to something outmoded, when in fact the dinos were among the most well-adapted, long-lived creatures ever.

Plus, intriguing dino facts: if you like eating chicken, you like eating dinosaurs, and how T-Rex’s puny arms helped him survive.

Also, with dozens of new species unearthed every year – nearly one a week – why we’ve entered the golden age of dinosaur discovery.

Guest:
  • Kenneth Lacovara – Paleontologist who unearthed the largest land dinosaur known: Dreadnoughtus.  He is also founding dean of the School of Earth and Environment at Rowan University, director of the Jean and Ric Edelman Fossil Park, and author of “Why Dinosaurs Matter.”

This repeat podcast was previously released on 6/25/2018

Download podcast at - http://bigpicturescience.org/episodes/free-range-dinosaurs

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

Sunday, April 07, 2019

Big Picture Science for Apr 08, 2019 - Go With the Flow













Big Picture Science - Go With the Flow

Solid materials get all the production credit.  Don’t get us wrong, we depend on their strength and firmness for bridges, bones, and bento boxes.  But liquids do us a solid, too.  Their free-flowing properties drive the Earth’s magnetic field, inspire a new generation of smart electronics, and make biology possible.  But the weird thing is, they elude clear definition.  Is tar a liquid or a solid?  What about peanut butter?

In this episode: A romp through a cascade of liquids with a materials scientist who is both admiring and confounded by their properties; how Earth’s molten iron core is making the magnetic north pole high-tail it to Siberia; blood as your body’s information superhighway; and how a spittlebug can convert 200 times its body weight in urine into a cozy, bubble fortress.

Guests:

Download podcast at - http://bigpicturescience.org/episodes/go-with-the-flow

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

Monday, April 01, 2019

Big Picture Science for Apr 01, 2019 - DecodeHer













Big Picture Science - DecodeHer

They were pioneers in their fields, yet their names are scarcely known – because they didn’t have a Y chromosome.  We examine the accomplishments of two women who pioneered code breaking and astronomy during the early years of the twentieth century and did so in the face of social opprobrium and a frequently hostile work environment.

Henrietta Leavitt measured the brightnesses of thousands of stars and discovered a way to gauge the distances to galaxies, a development that soon led to the concept of the Big Bang.

Elizabeth Friedman, originally hired to test whether William Shakespeare really wrote his plays, was soon establishing the science of code breaking, essential to success in the two world wars.

Also, the tech industry is overwhelmingly male.  Girls Who Code is an initiative to redress the balance by introducing girls to computer programming, and encouraging them to follow careers in tech.

Guests:

Download podcast at - http://bigpicturescience.org/episodes/decodeher

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

Wednesday, March 27, 2019

Big Picture Science for Mar 25, 2019 - You Are Exposed












Big Picture Science - You Are Exposed

(Repeat) There’s no place like “ome.”  Your microbiome is highly influential in determining your health.  But it’s not the only “ome” doing so.  Your exposome – environmental exposure over a lifetime – also plays a role.

Hear how scientists hope to calculate your entire exposome, from food to air pollution to water contamination.

Plus, new research on the role that microbes play in the development of neurological diseases such as Parkinson’s, and the hot debate about when microbes first colonize the body.  Could a fetus have its own microbiome?

Also, choose your friends wisely: studies of microbe-swapping gazelles reveal the benefits – and the downsides – of being social.

And, why sensors on future toilets will let you do microbiome analysis with every flush.

Guests:
  • Rob Knight – Professor of Pediatrics, Computer Science and Engineering, and Director of the Center for Microbiome Innovation at the University of California, San Diego
  • Vanessa Ezenwa – Ecologist at the University of Georgia
  • Indira Mysorekar – Microbiologist at Washington University in St. Louis, Missouri
  • Gary Miller – Professor of public health at the Rollins School of Public Health and director of the HERCULES Exposome Research Center at Emory University. After August 2018, his lab will be at Columbia University.

This repeat podcast was previously released on 5/14/2018

Download podcast at - http://bigpicturescience.org/episodes/you-are-exposed

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