Since 2002, Planetary Radio has visited with a scientist, engineer, project manager, advocate, or writer who provides a unique perspective on the quest for knowledge about our Solar System and beyond. The full show archive is available for free.

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Discovering life elsewhere: How can we be sure?

NASA’s Jim Green and Mary Voytek want the science community to develop tools that will help us evaluate potential evidence of life beyond Earth.

Arsenic and Odd Life

Arsenic and Odd Life