eastern astrophysicist mario livio looks at the scientific discoveries of galileo that challenged conventional thinking during his time. then, evolutionary biologist neil shubin looks at evolution using dna from prehistoric fossils. later, nassau astronaut and scientist kate green recalls her experiences living in a simulated martian environment. enjoy book tv on c-span2. >> joining us as representative or former representative from indiana, david mcintosh sir from 1995-2001 and is not the president of clippard row couldw amind the viewers about mission of this. >> thank you, we are the leading advocacy group for limited government and free-market economic policy. we push for those in congress but also have two political action committees that support candidates for congress and for senate who are champions for those issues. we have been very active this year in the republican primary and supporting candidates that we think will be great future leaders and strong supporters of slow growth in a free-market economic policy. >> host: what spending have you done in previous cycles? what do you pla

a world-renowned astrophysicist and best-selling author, mario livio known for his previous award-winning books include why, what makes us curious, the golden ratio, was not a mathematician, accelerating universe and the equation that cannot be solved which is his basis for an mi nominated pogrom. as a fellow of the american association for the advancement of science doctor livio has made significant theoretical contributions to topics ranging from cosmology, supernova explosions and back holes to extrasolar planets and the emergencies of life in the universe. moving in this world of scientific research and popular renown he has appeared that the galileo story could be treated just as a fascinating history that this book makes clear it is. though we rarely need because we're living to the next chapter of science denial which states that cannot be higher. we are so happy to have him digitally here tonight so without further ado the digital podium is yours. doctor livio. >> you very much. with your permission i would now try to share the screen. [laughter] >> sounds good. >> just one second

eastern astrophysicist mario livio looks at the scientific discoveries of galileo that challenged conventional thinking during his time. then, evolutionary biologist neil shubin looks at evolution using dna from prehistoric fossils. later, nassau astronaut and scientist kate green recalls her experiences living in a simulated martian environment. enjoy book tv on c-span2.