John Hogan, Bioengineering Branch NASA Ames Research Center, discusses research in life support systems that could be used to create a sustainable and regenerative environment in space. (March 2, 2010)

Dr. Yvonne Clearwater, Past Principle Investigator for NASA Habitability Research Program, discusses the complexity of designing a habitable space station that promotes research productivity by keeping astronauts healthy and happy in space. (March 4, 2010)

Chris McKay, Planetary Scientist with the Space Science Division of NASA Ames Research Center , discusses the idea that, based on the human valuation of life, the mission of astrobiology is to expand the richness and diversity of life. (February 23, 2010)