On Episode 196 of This Week In Space, Rod Pyle and Tariq Malik talk with Scott Solomon, Rice Univeristy professor and researcher, about humanity's need to expand its presence into the solar system.
The combustible sedimentary rock, better known as coal, was not only crucial to the onset of advanced technology here on earth, but it should also be key to the development of advanced E.T.s residing on any given exoearth. Or so say the authors of a new paper just published in the International Journal of Astrobiology.

