188 | Arik Kershenbaum on What Aliens Will Be Like

188 | Arik Kershenbaum on What Aliens Will Be Like

If extraterrestrial life is out there — not just microbial slime, but big, complex, macroscopic organisms — what will they be like? Movies have trained us to think that they won't be that different at all; they'll even drink and play music at the same cafes that humans frequent. A bit of imagination, however, makes us wonder whether they won't be completely alien — we have zero data about what extraterrestrial biology could be like, so it makes sense to keep an open mind. Arik Kershenbaum argues for a judicious middle ground. He points to constraints from physics and chemistry, as well as the tendency of evolution to converge toward successful designs, as reasons to think that biologically complex aliens won't be utterly different from us after all.

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Arik Kershenbaum received his Ph.D. in Evolutionary Biology and Ecology from the University of Haifa. He is currently College Lecturer and Director of Studies at Girton College, University of Cambridge. He is the author of The Zoologist's Guide to the Galaxy: What Animals on Earth Reveal About Aliens — and Ourselves.


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AMA | November 2020

AMA | November 2020

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123 | Lisa Feldman Barrett on Emotions, Actions, and the Brain

123 | Lisa Feldman Barrett on Emotions, Actions, and the Brain

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16 Nov 20201h 17min

122 | David Eagleman on Tapping Into the Livewired Brain

122 | David Eagleman on Tapping Into the Livewired Brain

Imagine you were locked in a sealed room, with no way to access the outside world but a few screens showing a view of what's outside. Seems scary and limited, but that's essentially the situation that...

9 Nov 20201h 17min

121 | Cornel West on What Democracy Is and Should Be

121 | Cornel West on What Democracy Is and Should Be

This episode is published on November 2, 2020, the day before an historic election in the United States. An election that comes amidst growing worries about the future of democratic governance, as wel...

2 Nov 20201h 21min

120 | Jeremy England on Biology, Thermodynamics, and the Bible

120 | Jeremy England on Biology, Thermodynamics, and the Bible

Erwin Schrödinger's famous book What Is Life? highlighted the connections between physics, and thermodynamics in particular, and the nature of living beings. But the exact connections between living o...

26 Okt 20201h 28min

119 | Musa al-Gharbi on the Value of Intellectual Diversity

119 | Musa al-Gharbi on the Value of Intellectual Diversity

In the service of seeking truth, there would seem to be value in intellectual diversity, both in keeping ourselves honest and in the possibility of new ideas coming from unexpected quarters. That's tr...

19 Okt 20201h 16min

118 | Adam Riess on the Expansion of the Universe and a Crisis in Cosmology

118 | Adam Riess on the Expansion of the Universe and a Crisis in Cosmology

Astronomers rocked the cosmological world with the 1998 discovery that the universe is accelerating. Well-deserved Nobel Prizes were awarded to Saul Perlmutter, Brian Schmidt, and today's guest Adam R...

12 Okt 20201h 18min

117 | Sean B. Carroll on Randomness and the Course of Evolution

117 | Sean B. Carroll on Randomness and the Course of Evolution

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