Are We Meant to Leave Earth? Why Humanity May Have No Choice but to Go to Space

Are We Meant to Leave Earth? Why Humanity May Have No Choice but to Go to Space

Astrobiologist Caleb Scharf joins Michael Shermer for a wide-ranging conversation about the past, present, and future of our relationship with space. Drawing on his new book The Giant Leap, Scharf explains why human expansion beyond Earth may be less a choice than an evolutionary development, and he walks through the physics, history, and personalities that shaped our journey off the planet.

Scharf also explains the biological toll of radiation and microgravity, and why terraforming Mars is probably unrealistic and why our future might rely more on building vast rotating habitats in space than on settling other planets.

Caleb Scharf is an astrobiologist and recipient of the 2022 Carl Sagan Medal. He was Director of Astrobiology at Columbia University in New York and is now the Senior Scientist for Astrobiology at the NASA Ames Research Center in Silicon Valley. He is author of more than 120 scientific papers and over 500 popular science articles. His new book is The Giant Leap: Why Space is the Next Frontier in the Evolution of Life.

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Why Good People Disagree About Right and Wrong

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11 Aug 1h 57min

Are We Building a God? AI, Superintelligence, and the Coming Singularity

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5 Aug 1h 22min

Can You Trust Wikipedia? Co-Founder Larry Sanger on Wikipedia's Bias and Why He Was Banned

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30 Juli 2h 3min

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18 Juli 1h 4min

The Truth About Sex Differences (Steve Stewart-Williams)

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11 Juli 55min

America at 250: What Did the Founders Get Right?

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Michael Shermer makes the case that the U.S. Founding Fathers were not only steeped in Enlightenment values on which the Declaration of Independence was based, but they were also scientists searching ...

6 Juli 17min

When History Goes on Trial: Demjanjuk, Eichmann, and Justice After Atrocity

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27 Juni 1h 32min

Why I Joined the Government UAP Science Advisory Council

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Michael Shermer has been appointed to the newly formed UAP Science Advisory Council, formed at the request of the White House and in coordination with the All-domain Anomaly Resolution Office (AARO), ...

23 Juni 29min

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