Are We Alone is the SETI Institute's weekly science radio program, hosted by Senior Astronomer Seth Shostak. The show covers a broad range of topics in the sciences as they relate to our understanding of the origin and evolution of life on Earth, and what life elsewhere in the universe might be like. Each week's show has a theme and allows scientists to share their latest findings and speculate on the implications for SETI (the Search for Extra-Terrestrial Intelligence) and society in general.