Episode 30: Aliens & Astrobiology with David Grinspoon

Alternatives to Thought, Special Guests

Chalmer brings in special guest David Grinspoon, an astrobiologist currently with the Library of Congress, to help answer the question: are we alone in the universe? Can we travel or send messages to other planets? What might signs of extraterrestrial life look like? And is your world in equilibrium? The truth is still out there in this edition of Alternatives to Thought.

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