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

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:

• Bill Miller – Physician and author of The Microcosm Within: Evolution and Extinction in the Hologenome
• Beth Archie – Biologist at the University of Notre Dame
• Nada Gligorov – Assistant professor of medical education at Mount Sinai Hospital
• Julia Scott – Freelance reporter working in San Francisco. Her article, “A Wash on the Wild Side” appeared in the May 22, 2014 issue of the New York Times Magazine.

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.

Big Picture Science for Monday 17 November 2014 - Surfeit of the Vitalest

Big Picture Science - Surfeit of the Vitalest

In the century and a half since Charles Darwin wrote his seminal On the Origin of the Species, our understanding of evolution has changed quite a bit. For one, we have not only identified the inheritance molecule DNA, but have determined its sequence in many animals and planets.

Evolution has evolved, and we take a look at some of the recent developments.

A biologist describes the escalating horn-to-horn and tusk-to-tusk arms race between animals, and a paleoanthropologist explains why the lineage from chimp to human is no longer thought to be a straight line but, instead, a bush. Also, New York Times science writer Carl Zimmer on the diversity of bacteria living on you, and which evolutionary concepts he finds the trickiest to explain to the public.

Guests:

• Douglas Emlen – Biologist, University of Montana and author of Animal Weapons: The Evolution of Battle
• Bernard Wood – Paleoanthropologist, George Washington University
• Carl Zimmer – Columnist for the New York Times

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

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.

Rover: Conditions Once Suited for Life on Mars

Source - NASA Science News for March 12, 2013

An analysis of a rock sample recently collected by NASA's Curiosity rover shows ancient Mars could have supported living microbes.

The complete article can be found here: http://science.nasa.gov/science-news/science-at-nasa/2013/12mar_graymars/

Ancient Microbes Found in Antarctic Lake

Source - NASA Science News for Nov. 29, 2012

Nearly 65 feet beneath the icy surface of a remote Antarctic lake, scientists have uncovered a community of bacteria existing in one of Earth's darkest, saltiest and coldest habitats. The finding could have implications for the possibility of life in extreme environments on other planets.

The complete article can be found here: http://science.nasa.gov/science-news/science-at-nasa/2012/30nov_lakevida/