Jonathan Losos: Surprises from Evolutionary Biology (BI 63)

Jonathan Losos: Surprises from Evolutionary Biology (BI 63)

Episode 63 of Books and Ideas an interview of Jonathan Losos, author of Improbable Destinies: Fate, Chance, and the Future of Evolution. This fascinating book reveals the surprising world of experimental evolutionary biology. We explore how experiments both in the laboratory and in the wild are answering long-standing questions about how evolution works.

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Synapse Evolution with Dr. Seth Grant (BSP 51)

Episode 51 of the Brain Science Podcast is an interview with Dr. Seth Grant from Cambridge University, UK.  Dr. Grant's work focuses on the proteins that make up the receptors within synapses. (Synapses are the key structures by which neurons send and receive signals.) By comparing the proteins that are present in the synapses in different species Dr. Grant has come to some surprising conclusions about the evolution of the synapse and the evolution of the brain. (Read more...)

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Dr. Eugenie Scott on Teaching Evolution (B&I 21)

Eugenie Scott, the Executive Director of the National Center for Science Education, was interviewed in Episode 21 of Books and Ideas. The focus of our conversation was the importance of teaching evolution in the public schools. Dr. Scott and the NCSE have worked for over 20 years to promote the teaching of evolution because it is an essential component of a modern education in the life sciences. Unfortunately, nearly 150 years after Darwin's On the Origin of Species (1859) many Americans still reject this fundamental idea and much of Scott's work is focused on trying to keep creationism and so-called Intelligent Design out of school curriculum. Recently the NCSE launched a very valuable site called Expelled Exposed, which focuses on exposing the many inaccuracies presented in Ben Stein's recent pro-intelligent design "documentary" Expelled. One of the things that has come out in numerous interviews is that the producers of the film mislead all the pro-evolution guests that appear in the film. We discuss this briefly near the end of the interview, but it was not the focus of our discussion. (see below for more links regarding Expelled) Since Dr. Scott has been interviewed about Expelled and Expelled Exposed on several other podcasts, I wanted to focus our interview more on the importance of accurate science education. Also, we discussed the fact that despite the claims of right-wing fundamentalists there are many Christians and people of other faiths who accept the theory of evolution as scientifically valid. Accepting evolution does not mean one is choosing atheism. I think this is a very important distinction because while atheists are outspoken in their support of evolution they represent a small minority. I was encouraged to learn from Dr. Scott that the NCSE is working closely with religious leaders and scientists of faith to try to educate their members. Since Books and Ideas reaches an international audience I thought that it was important that we discuss the origins of the evolution versus creationism controversy, which is unique to the United States. Scott does an excellent job of explaining how our unique religious heritage along with our locally controlled school systems combine to create a situation that most of the world find's rather mystifying. Her book Evolution vs. Creationism: An Introduction also provides an excellent overview of the subject from both an historical and scientific prospective. Finally, we talk about the importance of evolution as a basic idea in modern biology. While we didn't dwell on this, I think we are both concerned about the implications for the future if a majority of young Americans are reaching college without a solid foundation in the principles of evolution. We also talked about why intelligent design fails to meet the basic definition of a scientific theory since it provides no testable hypotheses. Dr. Scott also provides a excellent review of the basic writings for those who want to learn more.

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Links and References: Other Books mentioned by Dr. Scott:
  • Of Pandas and People: The Central Question of Biological Origins by Percival Davis and Dean H. Kenyon : the 1989 textbook that introduced the term “intelligent design”
  • Darwin on Trial by Phillip E. Johnson, 1991.
  • Darwin’s Black Box: The Biochemical Challenge to Evolution by Michael J. Behe
  • The Design Inference: Eliminating Chance through Small Probabilities by William A. Dembski
  • Behe MJ, Snoke DW. 2004. Simulating evolution by gene duplication of protein features that require multiple amino acid residues. Protein Science 10:2651-64.
Responses to Expelled Exposed by Christians

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Dan Rather Presents Neuroplasticity

Today HDNet™ is reshowing an episode of Dan Rather Reports called "Mind Science." It is an excellent review of neuroplasticity. It includes interviews with several leading scientists in the field. I especially enjoyed seeing Nobel Laureate Eric Kandel talk about his work with memory. (I talked about Kandel's work on the Brain Science Podcast in Episode 3 and Episode 12.) "Mind Science" also features the Dalai Llama and scientist Richard Davidson talking about the evidence that meditation can change the brain. Rather interviews Sharon Begely about her book Train Your Mind, Change Your Brain: How a New Science Reveals Our Extraordinary Potential to Transform Ourselves (which I discussed in detail in Episode 10 of the Brain Science Podcast). Other scientists featured in the episode include Michael Merzenich on improving brain function as we age and Dr. Edward Taub on his revolutionary approach to stroke rehabilitation. (My show notes for Episode 10 include links for all the scientists interviewed by Rather.) It was particulary gratifying to see Dr. Kandel endorse Ed Taub's Constraint-Induced Movement Therapy. Dr. Taub was interviewed in Episode 28 of the Brain Science Podcast. If you don't get HDNet™ you can watch Dan Rather Reports on-line, via podcast or on Facebook. Summary of relevant episodes of the Brain Science Podcast: itunes-chicklet.gif Subscribe via iTunes™ Subscribe in a reader or podcatcher Subscribe to Brain Science Podcast with Dr. Ginger Campbell by Email

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Exercise and the Brain (BSP 33)

Episode 33 of the Brain Science Podcast is an interview with Harvard physician, Dr. John Ratey about his new book Spark: The Revolutionary New Science of Exercise and the Brain. johnpic_profile.jpgJohn J Ratey, MD We explore the exciting evidence about how exercise helps the brain. It stimulates the release of a number of different neurotransmitters and neuropeptides, but probably more importantly it helps keeps these compounds balanced. We consider why exercise is so important in dealing with stress, in treating a wide range of mental illnesses including depression, anxiety, and attention deficit disorder. There is also evidence that exercise improves our ability to learn and our ability to avoid the loss of mental agility associated with aging. Listen to Episode 33 Now. This episode contains information that everyone can use. I hope you will share it with your friends and family. Links and References: spark-ratey.jpgSpark: The Revolutionary New Science of Exercise and the Brain (2008) by John J. Ratey Dr. Ratey's website: Go here for more interview of Dr. Ratey and also to find links to the latest research about exercise and the brain. Listen to Dr. Ratey's Interview Now. Share your comments on the Discussion Forum Audience Survey itunes-chicklet.gif Subscribe via iTunes™ Subscribe in a reader or podcatcher Subscribe to Brain Science Podcast with Dr. Ginger Campbell by Email

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The Evolution of Language (BSP 30)

firstword.jpg Episode 30 of the Brain Science Podcast is a discussion of The First Word: The Search for the Origins of Language by Christine Kenneally. We focus mostly on the first part of the book, which tells the story of how the study of language evolution has grown from almost a banned subject to a new field of inquiry called evolutionary linguistics. We also reflect on how recent findings in neuroscience like the importance of plasticity are influencing the field. Listen to Episode 30 Scientists Discussed in the Episode: *References: Pinker, Steven, and Paul Bloom, "Natural Language and Natural Selection," Behavioral and Brains Sciences 13 (1990): 707-84. Marc D. Hauser, Noam Chomsky, and W. Tecumseh Fitch (2002). "The Faculty of Language: What Is It, Who Has It, and How Did It Evolve?" Science 298:1569-1579. Christine Kenneally, The First Word: The Search for the Origins of Language (2007). Stanley I. Greenspan and Stuart G. Shanker, The First Idea: How Symbols, Language, and Intelligence Evolved from our Primate Ancestors to Modern Humans (2004). *Additional references can be found in Kenneally's book and at the websites of the scientists listed above. Listen to this episode now. Share your comments on the Discussion Forum Audience Survey itunes-chicklet.gif Subscribe via iTunes™ Subscribe in a reader or podcatcher Subscribe to Brain Science Podcast with Dr. Ginger Campbell by Email

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Check out this interview with linguist, Alice Gaby

sciampodcast.jpgI just listened to the February 6, episode of Science Talk, the podcast from Scientific American. Steve Mirsky talks with linguist Alice Gaby, from the University of California-Berkeley, about the relationship between language, culture, cognition and perception. This is very relevant to episode 30 of the Brain Science Podcast (due out on February 8), which is about the evolution of language.
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Helping Vets with Traumatic Brain Injuries get Rehab

In a recent interview with Dr. Edward Taub (Brain Science Podcast #28) we learned that Constraint-Induced Movement Therapy has been shown to help people with traumatic brain injuries, but that the Veteran's Administration has been slow to acknowledge the needs of veterans returning from Iraq and Afghanistan. Fortunately, the problem seems to be receiving increasing attention. The January 25th episode of the Science Magazine podcast discusses an article exploring the possible mechanisms of brain injury ocurring in near-blast conditions, where often the effects may be delayed and subtle. Also, Easter Seals has just announced that it is funding a program that will provide access to Michael Merzenich's highly regarded Posit Science Program, an on-line program originally developed to help older patients regain and maintain their mental agility. I don't know if they have done any work with traumatic brain injury, but the program certainly shows promise. References: "Shell Shock Revisited: Solving the Puzzle of Blast Trauma," Yudhijit Bhattacharjee, Science 25 January 2008: Vol. 319. no. 5862, pp. 406 - 408 Press Release: Easter Seals Launches Nationwide Program for U.S. Service Members and Veterans Deployed to Iraq or Afghanistan with Traumatic Brain Injury The IMPACT study: a clinical trial of the Posit Science Brain Fitness Program Posit Science Podcast: Dr. Merzenich presents the results of the IMPACT study
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