Our gust here is Seth Shostak. Dr. Shostak is the Senior Astronomer and Director, Center for SETI research. Shostak earned his B.S. in physics from Princeton University and a Ph.D. in astrophysics from the California Institute of Technology. Since 2001, he has been Senior Astronomer at the SETI Institute, a not-for-profit organization whose mission is to “explore, understand and explain the origin, nature and prevalence of life in the universe”. Dr Shostak is an active participant in the Institute’s observation programs and has been hosting SETI's weekly radio show Big Picture Science since 2002
The universe is unbelievably big — trillions of stars and even more planets. Soo… there just has to be life out there, right? But where is it? Why don’t we see any aliens? Where are they? And more importantly, what does this tell us about our own fate in this gigantic and scary universe?

Videos, explaining things. Like evolution, time, space, global energy or our existence in this strange universe.
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What are scientists looking for when searching for alien life? A lot, it turns out: the search for extraterrestrials requires the help from astronomers, planetary scientists, chemists, computer scientists, and geneticists, just to name a few. But are we barking up the wrong carbon-based tree? Could alien life develop in ways we haven't dreamed of here on Earth? Hear Paul Davies, Sara Seager, Jack Szostak, and other experts give updates on the search for life outside our planet in "Alien Life: Will We Know It When We See It?" part of the Big Ideas series at the 2014 World Science Festival.

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