DO NOT TIP. This is an unofficial YouTube mirror of CoolWorldsLab (https://youtu.be/mAm7wAbeEsc). If you want to tip CoolWorldsLab please visit https://www.coolworldslab.com/support. Convince CoolWorldsLab to join Odysee! ----------------------------- We caught up with Prof Sean Carroll at a recent astronomy conference and got his thoughts about time. Time may seem like a fundamental property of the Universe, but actually there's nothing in quantum theory which requires this to be so. Prof Carroll explains how time being merely an illusion, an emergent property rather than a fundamental one, is actually compatible with our best understanding of nature. This is one of two videos we shot with Sean so look out for the second video later in the year! ::More about this Video:: ► Sean Carroll: "From Eternity to Here" book available on Amazon: https://www.amazon.com/Eternity-Here-Quest-Ultimate-Theory/dp/0452296544 ► Sean Carroll's blog "Preposterous Universe" at https://www.preposterousuniverse.com/blog/ ► 229th Meeting of the American Astronomical Society: https://aas.org/meetings/aas229 ► Background music by Hans Zimmer, Interstellar OST ::Playlists For Channel:: Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds Cool Worlds Research ► http://bit.ly/CoolWorldsResearch Guest Videos ► http://bit.ly/CoolWorldsGuests Q&A Videos ► http://bit.ly/CoolWorldsQA Science of TV/Film ► http://bit.ly/ScienceMovies ::Follow us:: SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe Cool Worlds Lab http://coolworlds.astro.columbia.edu Twitter https://twitter.com/david_kipping Instagram https://www.instagram.com/cool.worlds THANKS FOR WATCHING!!

DO NOT TIP. This is an unofficial YouTube mirror of CoolWorldsLab (https://youtu.be/-eVdksZHqpo). If you want to tip CoolWorldsLab please visit https://www.coolworldslab.com/support. Convince CoolWorldsLab to join Odysee! ----------------------------- What does the future hold for humanity and our changing climate in the 21st century? Using projections from the IPCC Fifth Report and the climate science literature, we've put together a timelapse showing what may lie ahead. On the left hand side of the screen you'll see an "optimistic" view, where although we continue to emit carbon dioxide at significant levels, investments in clean energy and mitigation try to curb the damage. On the right hand side, you'll see a future where humanity emits as much as we please and very little mitigation takes place. The data presented in this video are a projection of the 21st century. We used two of the Representative Concentration Pathways (RCP), presented in the IPCC Fifth Report, as plausible scenarios - although these are not strictly forecasts. Seasonal variations were added using a stochastic generator conditioned upon observed seasonal variability reported by NASA GISS. Similarly, seasonal variability in carbon dioxide levels were simulated based on historical seasonal variations about a moving average predicted using the RCP models. Special thanks to Gavin Schmidt for advice during the course of this video production. And sorry for the typo at the very end! *It’s!!! Resources: ► Big thanks to the huge team who helped put together the IPCC Fifth Report from which much of the projections in this video come from: http://www.ipcc.ch/report/ar5/index.shtml ► Temperature spirals were inspired by Ed Hawkins: https://www.climate-lab-book.ac.uk/spirals/ ► NASA GISS global mean temperature record used to generate seasonal variations: https://data.giss.nasa.gov/gistemp/graphs_v4/ ► Visualizations of the Earth under RCP 8.5 and RCP 4.5 by Alex Kekesi, NASA's Scientific Visualization Studio and NASA Center for Climate Simulation: https://svs.gsfc.nasa.gov/4110 ► Carbon dioxide historical data comes from Mauna Loa: https://www.esrl.noaa.gov/gmd/ccgg/trends/data.html ► Represenative Concentration Pathays (RCP) Emission scenarios: http://tntcat.iiasa.ac.at:8787/RcpDb/dsd?Action=htmlpage&page=welcome ► Also recommend reading the SRES – Special Report on Emissions Scenarios: http://www.ipcc.ch/ipccreports/sres/emission/data/allscen.xls ► Knutti & Sedláček (2013), "Robustness and uncertainties in the new CMIP5 climate model projections", Nature Clim Change, 3, 369 https://www.nature.com/articles/nclimate1716#Sec3 ► Overland & Wang (2013), "When will the summer Arctic be nearly sea ice free?", Geophysical Research Letters, 40, 2097: https://agupubs.onlinelibrary.wiley.com/doi/epdf/10.1002/grl.50316 ► Huang, Yu, Guan, Wang & Guo (2016), "Accelerated dryland expansion under climate change", Nature Clim Change, 6, 166: https://www.nature.com/articles/nclimate2837 ► Annunzioa, Sandkera, Finegold & Min (2015), "Projecting global forest area towards 2030", Forest Ecology & Management, 352, 124: https://www.sciencedirect.com/science/article/pii/S0378112715001346#f0015 ► Biodiversity projections from GloBio, Convention on Biological Diversity: https://www.globio.info/assessments-with-globio/global-regional-assessments/136-biodiversity-scenarios-projections-of-21st-century-change-in-biodiversity-and-associated-ecosystem-services ► Westerling (2018), "Wildfire Simulations for California's Fourth Climate Change Assesment in Extreme Wildfire Events with a Warming Climate", Special Report for California's Fourth Climate Change Assesment: https://www.energy.ca.gov/sites/default/files/2019-07/Projections_CCCA4-CEC-2018-014.pdf ► Intro music is Cylinder Four (http://chriszabriskie.com/cylinders/) by Chris Zabriskie (http://chriszabriskie.com/); licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) ► Background music is a cover of "Isolated System", originally by Muse, performed by Nick Caville: https://soundcloud.com/nick-caville/isolated-system-piano And also... ► Columbia University Department of Astronomy: http://www.astro.columbia.edu ► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds Cool Worlds Research ► http://bit.ly/CoolWorldsResearch Cool Worlds Long Form Videos ► http://bit.ly/CoolWorldsEssays Guest Videos ► http://bit.ly/CoolWorldsGuests Q&A Videos ► http://bit.ly/CoolWorldsQA Tabby's Star ► http://bit.ly/TabbysStar Science of TV/Film ► http://bit.ly/ScienceMovies SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe THANKS FOR WATCHING!! #ClimateActionNow

DO NOT TIP. This is an unofficial YouTube mirror of CoolWorldsLab (https://youtu.be/uZRDONE4zng). If you want to tip CoolWorldsLab please visit https://www.coolworldslab.com/support. Convince CoolWorldsLab to join Odysee! ----------------------------- Visit our sponsor, Brilliant.org: https://brilliant.org/CoolWorlds New research! Join us today as we discuss a new research paper just published in the Proceedings of the National Academy of Sciences from our team - The Red Sky Paradox. → Support our research program: https://www.coolworldslab.com/support → Get Stash here! https://teespring.com/stores/cool-worlds-store THANK-YOU to our supporters T. Widdowson, D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, Z. Star, T. Zanjonc, C. Wolfred, F. Rebolledo, L. Skov, E. Wilson, M. Elliott, B. Daniluk, J. Patrick-Saunders, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, V. Alexandrov, L. Macchia, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, F. Linker, J. Rockett, N. Fredrickson, B. Mlazgar, D. Holland, J. Alexander, E. Hanway, J. Molnar, D. Murphree, S. Hannum, T. Donkin, K. Myers, K. Clawson, M. Sanford, P. Matos, S. Hannum, T. Jawad, T. Schnipper, T. Donkin, T. Moss, K. Myers & M. O'Brien. ::Links:: ► Kipping, D. (2021), "Formulation and resolutions of the red sky paradox", PNAS, 118 (26) e2026808118: https://arxiv.org/abs/2106.11207 ► Our video "The Odds of Life and Intelligence": https://youtu.be/iLbbpRYRW5Y ► Our video "Why we might be alone in the universe": https://youtu.be/PqEmYU8Y_rI ::Music:: Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], or via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/), or with permission from the artist ► Joachim Heinrich - Arrival ► Falls - Life in Binary ► Joachim Heinrich - Y ► Chris Zabriskie - Cylinder Two ► Chris Zabriskie - Cylinder Five ► Indive - Fusion ::Video clips:: ► The Thinker clip by Great Art Explained ► Tea sitirring clip by Chirag Kalelkar ► Cosmology simulation by ESO/L. Calçada/Microsoft WWT ► Sun videos by NASA/SDO ► TRAPPIST-1 animations by ESO/L. Calcada/spaceengine.org ► Roulette clip by steveh552 ► Galactic colonization animation by Jonathan Caroll-Nellenback ► Easter Island clips by Easter Island WTM ► Proxima Centauri b animations by ESO/Konstantino Polizois/Nico Bartmann ► Planet formation animation by NCSA, NASA, A. Boley ► Jupiter clip by NASA/SwRI/MSSS/G. Eichstadt/S. Doran ► M-dwarf planet animation by ESO/M. Kornmesser ► HabEX animation by NASA/JPL ► Outro video by ESO/L.Calcada/spaceengine.org ::Film clips used:: ► The House (2017) - Warner Bros ► Noah (2014) - Paramount Pictures ► Avatar (2009) - 20th Century Fox ::Thumbnail:: ► Created by Helena Valenzuela Widerström: https://helenavw.artstation.com ::Chapters:: 00:00 Prologue 00:39 Paradoxes 03:05 Red Sky Paradox 05:05 Resolution I 10:39 Sponsored section 11:24 Resolution II 12:40 Resolution III 13:38 Resolution IV 16:19 Outro and credits #RedSkyParadox #Astrobiology #CoolWorlds

DO NOT TIP. This is an unofficial YouTube mirror of CoolWorldsLab (https://youtu.be/ravGth6R5C8). If you want to tip CoolWorldsLab please visit https://www.coolworldslab.com/support. Convince CoolWorldsLab to join Odysee! ----------------------------- Moore's Law has given us exponential improvements in computer technology for many decades, benefiting everything from astrophysics to iPhones, but is it about to end? Jamie Teherani a Columbia Professor of Electrical Engineering, swung by the Cool Worlds Lab to explain what Moore's Law is all about and predict it's future. ::More about this Video:: ► Jamie Teherani explains how a computer works video: https://youtu.be/8cVsgFN3hSM ► Video of a black hole tidal disruption event courtesy of NASA: https://youtu.be/hu6hIhW00Fk ► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu ► Columbia University Department of Astronomy: http://www.astro.columbia.edu ► Outro music by Daft Punk "Harder, Better, Stronger, Faster": http://www.daftpunk.com and http://smarturl.it/DaftPunkiTunes ::Playlists For Channel:: Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds Cool Worlds Research ► http://bit.ly/CoolWorldsResearch Guest Videos ► http://bit.ly/CoolWorldsGuests Q&A Videos ► http://bit.ly/CoolWorldsQA Science of TV/Film ► http://bit.ly/ScienceMovies ::Follow us:: SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe Cool Worlds Lab http://coolworlds.astro.columbia.edu Twitter https://twitter.com/david_kipping Instagram https://www.instagram.com/cool.worlds THANKS FOR WATCHING!!