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Science Friday

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Language: English
Category: Science and Medicine / Science and Medicine
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Weekly podcast of 'Science Friday,' a science and technology news discussion program heard on public radio stations across the USA.


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Robert Ballard: 50 Years Exploring Deep Waters
Deep-sea voyager Robert Ballard has discovered everything from 10-foot-tall tube worms to the Titanic on his ocean expeditions around the world. Ballard discusses his underwater finds and how new robotic technology allows scientists to explore the sea from ashore....

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[ Mon, 06 Jul 2009 11:48:32 -0400 ]


Can The Mississippi Delta Survive Rising Seas?
Reporting in Nature Geoscience, two coastal scientists write that rising sea levels, combined with slow Mississippi Delta growth, could drown the Louisiana coast by 2100. Delta expert Ivor van Heerden, who is not involved with the research, discusses the findings....

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[ Mon, 06 Jul 2009 11:48:29 -0400 ]


Fireworks Are Packed With Chemistry
Why do some fireworks shoot golden flaming balls while others produce green sparks? It's just chemistry. Bassam Shakhashiri, chemistry professor at the University of Wisconsin-Madison, explains the science of fireworks....

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[ Mon, 06 Jul 2009 11:48:12 -0400 ]


Celebrate July 4th With Backyard Science
In case you forgot to pick up some sparklers for the holiday weekend, don't despair. Ira Flatow and a team of backyard science experts explain how to (safely) make firecrackers, smoke bombs and even an Oreo-fueled rocket, all while learning some basic scientific principles....

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[ Mon, 06 Jul 2009 11:48:06 -0400 ]


Astronomers See A New Class of Black Hole
Scientists say X-ray data collected by the European Space Agency's XMM-Newton spacecraft show evidence of a new type of black hole in a galaxy about 290 million light years from Earth. Astronomer Sean Farrell explains what the discovery might tell us about galaxy evolution....

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[ Mon, 06 Jul 2009 11:48:03 -0400 ]


Reviewing Science On The Big Screen
From sci-fi to documentaries, good science films tell the human story behind scientific ideas. Which films get the science right, and which don't? Physicist and movie critic Sidney Perkowitz runs down through some of this summer's top science flicks....

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[ Fri, 26 Jun 2009 18:11:00 -0400 ]


Video Pick: An Airplane That Flies Itself
Meet the V-Bat: it's about 70 pounds, eight feet tall, equipped with computers and flies without a pilot. Engineer Stephen Morris, the president and CEO of MLB Co., describes how the plane works and what it might be good for....

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[ Fri, 26 Jun 2009 18:10:57 -0400 ]


Could Algae Be Milked Like A Cow?
Algae-based biofuel is made by grinding up algae cells and extracting the oil. Reporting in Industrial & Engineering Chemistry Research, Richard Gordon, of the University of Manitoba, and colleagues suggest that engineering algae to secrete oil might be a more efficient approach....

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[ Fri, 26 Jun 2009 18:10:54 -0400 ]


Wind Has Soaring Potential, Study Finds
Wind alone could provide more than 16 times the electricity needs of the U.S., according to a study in the Proceedings of the National Academy of Sciences. Harvard professor Michael McElroy and Revis James, of Electric Power Research Institute, discuss the challenges of harnessing wind power....

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[ Fri, 26 Jun 2009 18:10:49 -0400 ]


Of Fuel Cells And Chicken Feathers
Each year, the agricultural industry must dispose of billions of pounds of chicken feathers. Richard Wool, a chemical engineer at the University of Delaware, says when feathers are heated, they develop nano-sized caverns in which hydrogen can be stored....

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[ Fri, 26 Jun 2009 18:10:46 -0400 ]


Fluke Footage Shows How Sperm Whales Steal
For years, long-line fishermen in Alaska have complained that whales have been stealing their sablefish catch. A team of researchers mounted a video camera to a fishing line and caught a sperm whale in the act, providing new insight into whale behavior....

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[ Fri, 19 Jun 2009 18:09:30 -0400 ]


Same-Sex Behavior Documented In Many Animals
A review of research concludes that same-sex sexual behaviors are common in many animals, including worms, frogs, flies and birds. Postdoctoral researcher Nathan Bailey describes some of the documented behaviors and explains how they may influence animal evolution....

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[ Fri, 19 Jun 2009 18:09:23 -0400 ]


Fertility Linked To The Packaging Of Sperm
New research suggests that the packaging of human sperm using proteins called histones plays a bigger role in fertility than once thought. Professor of oncological sciences Bradley Cairns explains how sperm get their shape, and how that shape can affect embryonic development....

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[ Fri, 19 Jun 2009 18:09:19 -0400 ]


Summer Sky Highlights What's Missing
This season's astronomical highlights are about what won't be visible in the night sky. Astronomer Paul Rao discusses what he describes as "the eclipse of the century," Jupiter's mysterious missing moons, the vanishing rings of Saturn and the forthcoming Perseid meteor shower....

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[ Fri, 19 Jun 2009 18:09:15 -0400 ]


Can Health Care Reform Succeed This Time?
Health care reform officially began in Washington this week, and lawmakers have been hashing out the painful trade-offs of a bipartisan plan. Guest host Paul Raeburn talks with experts about the economic and medical realities of improving care and coverage at lower costs....

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[ Fri, 19 Jun 2009 18:09:07 -0400 ]


Secret To Slithering Is In The Scales
How do snakes slither on smooth surfaces? Mechanical engineer David Hu, of Georgia Tech, filmed snakes slithering up inclines, outfitted them in jackets and photographed them through jello to better understand snake locomotion....

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[ Fri, 12 Jun 2009 18:07:21 -0400 ]


Study Says Fingerprints Aren't For Friction
New research in The Journal of Experimental Biology shows that — contrary to conventional wisdom — fingerprints don't increase the friction between the fingertips and the grasped object. Biomechanics researcher A. Roland Ennos explains what fingerprints might actually be for....

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[ Fri, 12 Jun 2009 18:07:18 -0400 ]


The 47th Prime
The 47th Prime...

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[ Fri, 12 Jun 2009 18:07:17 -0400 ]


How Stanley Milgram 'Shocked the World'
In the early '60s psychologist Stanley Milgram conducted his "obedience" experiments, showing that most people will do what an authority figure tells them to do. Psychology professor Thomas Blass details Milgram's life and work in his book The Man Who Shocked the World....

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[ Fri, 12 Jun 2009 18:07:12 -0400 ]


Waiting For A Superstinky Flower To Bloom
Botanists at the Huntington Library and Botanical Gardens in San Marino, Calif., are predicting that their rare and ultrasmelly "corpse flower" will bloom any day now. Botanical education manager Kitty Connolly describes the plant, and its somewhat unusual smell....

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[ Fri, 12 Jun 2009 18:07:09 -0400 ]


Telescopes Probe Birth Of Stars And The Universe
NASA scientists Paul Goldsmith and Charles Lawrence discuss the space telescopes Herschel and Planck, which the European Space Agency launched last month. Herschel will investigate star and galaxy formation, and Planck will observe the residual glow of the newborn universe....

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[ Fri, 12 Jun 2009 18:07:06 -0400 ]


What Are The Chances Of A Planetary Collision?
Writing in the journal Nature this week, scientists present scenarios in which Mercury, Venus or Mars could collide with the Earth during the next 5 billion years. Astrophysicist Greg Laughlin discusses these possibilities and why there's no need to panic yet....

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[ Fri, 12 Jun 2009 18:07:02 -0400 ]


NASA Prepares Two Lunar Satellites For Launch
NASA scientist James Garvin discusses the upcoming launch of two lunar satellites. One will map the moon's surface for future human exploration. The other will crash into a crater near the south pole, kicking up a plume of debris in which scientists hope to find water ice....

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[ Fri, 12 Jun 2009 18:06:59 -0400 ]


Researchers Study Vaccines For Skin Cancer
Can targeted vaccines help the human immune system respond better to cancer therapies? Douglas Schwartzentruber, medical director of the Center for Cancer Care at the Goshen Health System in Goshen, Ind., describes a study of a vaccine that can help slow the progress of metastatic melanoma....

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[ Fri, 05 Jun 2009 18:03:30 -0400 ]


Isaac Newton: Physicist And ... Crime Fighter?
Isaac Newton is best known for his studies of physics and for developing the three basic laws that describe motion. In Newton and the Counterfeiter, author Thomas Levenson describes another side of Newton: his career as the crime-fighting head of the Royal Mint....

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[ Fri, 05 Jun 2009 18:03:26 -0400 ]


Tickling Primates To Learn About Laughter
Do nonhuman primates have a sense of humor? Marina Davilla Ross and colleagues tickled baby gorillas, chimps, orangutans, bonobos and humans. Publishing in Current Biology, the researchers analyzed the sounds the primates made, looking for clues to the evolution of laughter....

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[ Fri, 05 Jun 2009 18:03:23 -0400 ]


Manhattanhenge: Crowds Gather To See A Star Align
Twice a year, the sunset lines up with New York City's street grid — making for spectacular views. Neil deGrasse Tyson, director of the Hayden Planetarium in New York, identified the cosmic event over a decade ago and coined the name Manhattanhenge....

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[ Fri, 05 Jun 2009 18:03:21 -0400 ]


Will Nuclear Power Be Part Of A Climate Solution?
Some environmentalists believe building more nuclear power plants today is the best way to combat climate change while solar and other renewable energy sources mature. Ira Flatow and experts discuss the economic and engineering hurdles to nuclear development in the U.S....

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[ Fri, 05 Jun 2009 18:03:16 -0400 ]


New Laser Facility Fuels Dreams Of Nuclear Fusion
A new multibillion-dollar facility in California houses the world's most powerful laser. But is it powerful enough to trigger the thermonuclear fusion reaction that occurs in stars? Some scientists are doubtful. Lab Director Edward Moses discusses the controversial project....

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[ Fri, 05 Jun 2009 18:03:12 -0400 ]


Artists Find Inspiration In Genetic Research
Two artists delve into DNA as subject matter for their work and the results are as different as one haplogroup to the next. Lynn Fellman and Daniel Kohn talk about their experiences in the laboratory and how their art visually represents DNA....

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[ Fri, 29 May 2009 18:08:08 -0400 ]

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