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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Episoder(427)

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...

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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

Evolution is a messy business, involving as it does selection pressures, mutations, genetic drift, and the effects of random external interventions. So in the end, how much of it is predictable, and h...

5 Okt 20201h 20min

116 | Teresa Bejan on Free Speech, Civility, and Toleration

116 | Teresa Bejan on Free Speech, Civility, and Toleration

How can, and should, we talk to each other, especially to people with whom we disagree? "Free speech" is rightfully entrenched as an important value in liberal democratic societies, but implementing i...

28 Sep 20201h 43min

115 | Netta Engelhardt on Black Hole Information, Wormholes, and Quantum Gravity

115 | Netta Engelhardt on Black Hole Information, Wormholes, and Quantum Gravity

Stephen Hawking made a number of memorable contributions to physics, but perhaps his greatest was a puzzle: what happens to information that falls into a black hole? The question sits squarely at the ...

21 Sep 20201h 27min

114 | Angela Chen on Asexuality in a Sex-Preoccupied World

114 | Angela Chen on Asexuality in a Sex-Preoccupied World

Sexuality is, and always has been, a topic that is endlessly fascinating but also contentious. You might think that asexuality would be more straightforward, but you'd be wrong. Asexual people, or "ac...

14 Sep 20201h 8min

113 | Cailin O'Connor on Game Theory, Evolution, and the Origins of Unfairness

113 | Cailin O'Connor on Game Theory, Evolution, and the Origins of Unfairness

You can't always get what you want, as a wise person once said. But we do try, even when someone else wants the same thing. Our lives as people, and the evolution of other animals over time, are shape...

7 Sep 20201h 19min

112 | Fyodor Urnov on Gene Editing, CRISPR, and Human Engineering

112 | Fyodor Urnov on Gene Editing, CRISPR, and Human Engineering

Not too long ago nobody carried a mobile phone; now almost everybody does. That's the kind of rate of rapid progress we're seeing with our ability to directly edit genomes. With the use of CRISPR-Cas9...

31 Aug 20201h 20min

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