Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas25 Tammi 2021

131 | Avi Loeb on Taking Aliens Seriously

The possible existence of technologically advanced extraterrestrial civilizations — not just alien microbes, but cultures as advanced (or much more) than our own — is one of the most provocative questions in modern science. So provocative that it's difficult to talk about the idea in a rational, dispassionate way; there are those who loudly insist that the probability of advanced alien cultures existing is essentially one, even without direct evidence, and others are so exhausted by overblown claims in popular media that they want to squelch any such talk. Astronomer Avi Loeb thinks we should be taking this possibility seriously, so much so that he suggested that the recent interstellar interloper `Oumuamua might be a spaceship built by aliens. That got him in a lot of trouble. We talk about the trouble, about `Oumuamua, and the attitude scientists should take toward provocative ideas.

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Abraham (Avi) Loeb received his Ph.D. in plasma physics from the Hebrew University of Jerusalem. He is currently the Frank B. Baird Jr. professor of science at Harvard University. He served as the Chair of Harvard's Astronomy department from 2011-2020. He is Director of the Institute for Theory and Computation of the Harvard-Smithsonian Center for Astrophysics, and Founding Director of Harvard's Black Hole Initiative. He is chair of the Advisory Committee for the Breakthrough Starshot Initiative. His new book is Extraterrestrial: The First Sign of Intelligent Life Beyond Earth.

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196 | Judea Pearl on Cause and Effect

To say that event A causes event B is to not only make a claim about our actual world, but about other possible worlds — in worlds where A didn't happen but everything else was the same, B would not h...

9 Touko 20221h 16min

195 | Richard Dawkins on Flight and Other Evolutionary Achievements

Evolution has equipped species with a variety of ways to travel through the air — flapping, gliding, floating, not to mention jumping really high. But it hasn't invented jet engines. What are the diff...

2 Touko 20221h 18min

194 | Frans de Waal on Culture and Gender in Primates

Humans are related to all other species here on Earth, but some are closer relatives than others. Primates, a group that includes apes, monkeys, lemurs, and others besides ourselves, are our closest r...

25 Huhti 20221h 8min

193 | Daniels on Everything, Everywhere, All at Once

Every time we make an important decision, it's hard not to wonder how things would have turned out had we chosen differently. The set of all those hypothetical lives is a kind of "multiverse" — not on...

18 Huhti 20221h 8min

AMA | April 2022

Welcome to the April 2022 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). I take the large number of quest...

14 Huhti 20223h 27min

192 | Nicole Yunger Halpern on Quantum Steampunk Thermodynamics

Randomness and probability are central to modern physics. In statistical mechanics this is because we don't know everything about the distribution of atoms and molecules in a fluid, so we consider a p...

11 Huhti 20221h 17min

191 | Jane McGonigal on How to Imagine the Future

The future grows out of the present, but it manages to consistently surprise us. How can we get better at anticipating and preparing for what the future can be like? Jane McGonigal started out as a ga...

4 Huhti 20221h 21min

190 | Lea Goentoro on Regrowing Limbs

Biological organisms are pretty good at healing themselves, but their abilities fall short in crucial ways. Planaria can be cut into pieces, and each piece will regrow into an entire organism; but for...

28 Maalis 20221h 3min