302 | Chris Kempes on the Biophysics of Evolution

It’s a big universe we live in, so it comes as no surprise that big numbers are needed to describe it. There are roughly 10^22 stars in the observable universe, and about 10^88 particles altogether. But these numbers are nothing compared to some of the truly ginormous quantities that mathematicians have found to talk about, with inscrutable names like Graham’s Number and TREE(3). Could such immense numbers have any meaningful relationship with the physical world? In his recent book Fantastic Numbers and Where to Find Them, theoretical physicist Antonio Padilla explores both our actual universe and the abstract world of immense numbers, and finds surprising connections between them.Support Mindscape on Patreon.Antonio (Tony) Padilla received his Ph.D. in physics from the University of Durham. He is currently a Royal Society Research Fellow in the School of Physics and Astronomy at the University of Nottingham. He is a frequent contributor to the YouTube series Sixty Symbols and Numberphile.Web pageNottingham staff pageGoogle Scholar publicationsAmazon author pageTwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

17 Loka 20221h 15min

Welcome to the October 2022 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patreons, whittle them down to a more manageable number — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy!Support Mindscape on Patreon.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

10 Loka 20223h 1min

With communication satellites, weather satellites, GPS, and much more, what happens in space is already important to our lives here on Earth. And the importance of space is only going to grow as we increase the presence of humans, whether in Earth orbit or beyond. So the questions of what laws govern activity in space, and how nations and institutions should practice good governance more generally, are becoming increasingly urgent. Timiebi Aganaba is an academic and space lawyer who has experience experience in a wide variety of context and countries. We talk about the current status of space law and how to guarantee good governance going forward.Support Mindscape on Patreon.Timiebi Aganaba received Ph.D. and LL.M. degrees from the Institute of Air and Space Law at McGill University. She is currently an assistant professor in the School for the Future of Innovation in Society at Arizona State University, with a courtesy appointment at the Sandra Day O’Connor College of Law. She is also an affiliate faculty with the Interplanetary Initiative and a senior global futures scientist with the Global Futures Lab at ASU. She served as Executive Director of the World Space Week Association, and currently serves on advisory boards for the UN Space Generation Advisory Council, the Board of World View Enterprises, and the SETI Institute. She was the recipient of a Space Leaders Award from the International Astronautical Federation and her doctorate received the George and Ann Robinson Award for advanced research capabilities.Web siteASU web pageSpaceTV profileWorld Space WeekSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

3 Loka 20221h 16min

The detection of gravitational waves from inspiraling black holes by the LIGO and Virgo collaborations was rightly celebrated as a landmark achievement in physics and astronomy. But ultra-precise ground-based observatories aren’t the only way to detect gravitational waves; we can also search for their imprints on the timing of signals from pulsars scattered throughout our galaxy. Chiara Mingarelli is a member of the North American Nanohertz Observatory for Gravitational Waves (NANOGrav) collaboration, which uses pulsar timing to study the universe using gravitational waves.Support Mindscape on Patreon.Chiara Mingarelli received her Ph.D. in physics from the University of Birmingham. She is currently an assistant professor of physics at the University of Connecticut and a research scientist at the Flatiron Institute Center for Computational Astrophysics. Her Ph.D. thesis was selected by Springer Nature as an Outstanding PhD thesis, and she was selected as a “Voice of the Future” by the Royal Astronomical Society. She regularly contributes to science communication, including Amy Poehler’s Smart Girls and the Science Channel’s “How the Universe Works."Web siteSimons Foundation web pageGoogle Scholar publicationsWikipediaTwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

26 Syys 20221h 26min

My little pandemic-lockdown contribution to the world was a series of videos called The Biggest Ideas in the Universe. The idea was to explain physics in a pedagogical way, concentrating on established ideas rather than speculations, with the twist that I tried to include and explain any equations that seemed useful, even though no prior mathematical knowledge was presumed. I’m in the process of writing a series of three books inspired by those videos, and the first one is coming out now: The Biggest Ideas In The Universe: Space, Time, and Motion. For this solo episode I go through one of the highlights from the book: explaining the mathematical and physical basis of Einstein’s equation of general relativity, relating mass and energy to the curvature of spacetime. Hope it works!Support Mindscape on Patreon.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

19 Syys 20221h 51min

What’s the fastest way to get a human being around a racetrack, if we ignore all the rules of racing? How many pages would you have to read to absorb all of the government laws that apply to you? It’s hard to imagine a better person to tackle these kinds of slightly-askew questions than Randall Munroe, creator of the xkcd webcomic. He collected some answers in his book What If?, and has released a sequel, What If? 2. We dive into how one goes about choosing the right questions and answering them, and how to make it funny along the way.Support Mindscape on Patreon.Randall Munroe received a degree in physics from Christopher Newport University, before working for a while at NASA’s Langley Research Center. He is now the creator of xkcd and the author of several books. What If? and What If? 2 are based on a regular feature in which he tackles questions asked by readers.Web siteAmazon author pageExplain xkcdWikipediaTwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

12 Syys 20221h 8min

People throughout history have imagined ideal societies of various sorts. As the twentieth century dawned, advances in manufacturing and communication arguably brought the idea of utopia within our practical reach, at least as far as economic necessities are concerned. But we failed to achieve it, to say the least. Brad DeLong’s new book, Slouching Towards Utopia: An Economic History of the Twentieth Century, investigates why. He compares the competing political and economic systems that dominated the “long 20th century” from 1870 to 2010, and how we managed to create such enormous wealth and still be left with such intractable problems.Support Mindscape on Patreon.J. Bradford DeLong received his Ph.D. in economics from Harvard University. He is currently a professor of economics at the University of California, Berkeley. and chief economist at the Blum Center for Developing Economies. He previously served as deputy assistant secretary of the U.S. Treasury for Economic Policy from 1993 to 1995. He has been a long-running blogger, now moved to Substack. He is a co-editor of The Economists’ Voice.Web siteBerkeley web pageSubstack/blogGoogle Scholar publicationsPodcast (with Noah Smith)WikipediaTwitterSee Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

5 Syys 20221h 24min

Welcome to the September 2022 Ask Me Anything episode of Mindscape! These monthly excursions are funded by Patreon supporters (who are also the ones asking the questions). We take questions asked by Patrons, whittle them down to a more manageable number — based primarily on whether I have anything interesting to say about them, not whether the questions themselves are good — and sometimes group them together if they are about a similar topic. Enjoy!Support Mindscape on Patreon.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.

29 Elo 20223h 30min