Summary
Recent observations reveal alarming trends in the Earth's climate, particularly concerning sea ice levels. A viral plot shared online shows a significant decline in global sea ice coverage, prompting scrutiny and verification from experts. An astronomer independently confirmed the data, noting that the Arctic's average temperature is currently several degrees Celsius above normal, with some days recording temperatures up to 20 degrees Celsius higher than usual. This unusual warmth correlates with record low sea ice levels, raising concerns about the implications for climate stability.
The data combines metrics from both the Arctic and Antarctic, which typically behave independently. While the Antarctic is losing ice as it enters summer, the Arctic is failing to recover its ice during the winter months at expected rates. This unprecedented situation could either indicate a natural climate cycle or suggest that the planet is approaching a tipping point due to human-induced climate change. The consensus among scientists is that human activity is significantly contributing to rising carbon dioxide levels, which in turn affects global temperatures.
The discussion emphasizes that climate change should not be viewed through a political lens but rather as a scientific issue with serious consequences for human life and civilization. The urgency for action is clear, as the potential for catastrophic outcomes looms if significant measures are not taken to transition to a carbon-neutral economy. The message is one of awareness and proactive engagement to mitigate the effects of climate change and protect future generations.
Show Notes
This week a plot showing the global sea ice over time went viral due to shockingly low levels, smashing previous records. The plot was so weird that we decided to check out the data for ourselves and see if it was legit. Indeed, we can reproduce this alarming plot and provide some links and scripts for any of you who want to go ahead and try yourselves. Here we get into why we think these kinds of weird observations may become more common in the future.::More about this Video::► National Sea and Ice Data Center archive of sea ice extent data: https://nsidc.org/data/docs/noaa/g02135_seaice_index/► My Mathematica script used to generate a confirming plot: https://github.com/davidkipping/seaiceextent► Two of the first tweets publicizing the viral plot, Zach Labe (https://twitter.com/ZLabe/status/798913080168095744) and Eric Holthaus (https://twitter.com/EricHolthaus/status/800067428419940352).► Wipneus archive of plots: https://sites.google.com/site/arctischepinguin/home/sea-ice-extent-area/grf► Eric Holthaus blog article about the viral plot: http://tinyletter.com/sciencebyericholthaus/letters/today-in-weather-climate-sea-ice-tipping-point-edition-monday-november-21th► Guardian article on record Arctic temperatures: https://www.theguardian.com/environment/2016/nov/22/extraordinarily-hot-arctic-temperatures-alarm-scientists► CNN article on record Arctic temperatures: http://www.cnn.com/2016/11/18/world/sea-ice-arctic-antarctic-lows/► Conrath at al. (1970), "The Infrared Interferometer Experiment on Nimbus 3": http://onlinelibrary.wiley.com/doi/10.1029/JC075i030p05831/abstract► Gavin Schmidt explains "How we know that the Earth's climate is changing": https://youtu.be/mkT7IyUSjq0► Video background music by Nick Caville: https://www.youtube.com/watch?v=iv2WSDMBRxA::Playlists For Channel::Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorldsCool Worlds Research ► http://bit.ly/CoolWorldsResearchGuest Videos ► http://bit.ly/CoolWorldsGuestsQ&A Videos ►http://bit.ly/CoolWorldsQAScience of TV/Film ► http://bit.ly/ScienceMovies::Follow us::SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribeCool Worlds Lab http://coolworlds.astro.columbia.eduTwitter https://twitter.com/david_kippingInstagram https://www.instagram.com/cool.worldsTHANKS FOR WATCHING!! Learn more about your ad choices. Visit megaphone.fm/adchoices
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Use code coolworlds at https://incogni.com/coolworlds to get an exclusive 60% off an annual Incogni plan.Nuclear weapons are the most terrifying invention of humanity. Could our genius to create such weapons also end them? Today we explore how neutrinos could be used to do just that, fizzling out nukes anywhere on Earth and with no defense.Written & presented by Prof. David Kipping, edited by Jorge Casas. Special thanks to Sam Gregson (youtube.com/@BadBoyofScience) for fact checking.→ Support our research: https://www.coolworldslab.com/support→ Get merch: https://teespring.com/stores/cool-worlds-store→ Check out our podcast: www.youtube.com/@CoolWorldsPodcastREFERENCES► The IceCube Collaboration 2023, "Observation of high-energy neutrinos from the Galactic plane", Science, 380, 1338: https://arxiv.org/abs/2307.04427► Sugawara et al. 2003, "Destruction of Nuclear Bombs Using Ultra-High Energy Neutrino Beam", arXiv:hep-ph/0305062: https://arxiv.org/abs/hep-ph/0305062► King 1999, "Potential Hazards from Neutrino Radiation at Muon Colliders", Proceedings of the 1999 IEEE Particle Accelerator Conference. 29 Mar - 2 Apr 1999, New York, New York. 18th IEEE Particle Accelerator Conference, p.318-320: https://arxiv.org/abs/physics/9908017► Silagadze 2008, "SETI and muon collider", Acta Physica Polonica B, 39, 2943: https://arxiv.org/abs/0803.0409THANK-YOU to D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, J. Rockett, D. Murphree, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, W. Evans, D. Bansal, J. Curtin, J. Sturm, RAND Corp., M. Donovan, N. Corwin, M. Mangione, K. Howard, L. Deacon, G. Metts, R. Provost, B. Sigurjonsson, G. Fullwood, B. Walford, J. Boyd, N. De Haan, J. Gillmer, R. Williams, E. Garland, A. Leishman, A. Phan Le, R. Lovely, M. Spoto, A. Steele, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn & C. Seay.MUSIC0:00 Stephen Keech - Fable1:25 Brad Hill - It’s Always Darkest Before The Dawn3:54 Brad Hill - World of Wonder5:00 Chris Zabriskie - Music From Neptune Flux 047:46 Brad Hill - Arctic Warmth10:36 Brad Hill - Northern Boards13:25 Joachim Heinrich - Stjärna14:58 Brad Hill - FragileCHAPTERS0:00 Neutrinos3:39 Incogni5:08 Neutrino Factories9:11 Applications14:19 My Take16:17 Outro & Credits#nuclearwar #nuke #coolworlds Learn more about your ad choices. Visit megaphone.fm/adchoices
Thanks to Storyblocks for sponsoring this video! Download unlimited stock media at one set price with Storyblocks: http://storyblocks.com/CoolWorldsToday we explore a problem that has haunted theoretical physicists for decades and remains a topic of active debate - do black holes destroy information? A key precept in quantum theory is that information should be conserved, yet anything that falls into a black hole is seemingly obliterated. How can we reconcile our theories of gravity with that of the quantum world? And could the answer transform the way we look at the Universe...Written & presented by Prof. David Kipping. Special thanks to Prof Janna Levin for fact checking and for her wonderful book that inspired this video, "Black Hole Survival Guide" https://a.co/d/eqqP6z1→ Support our research: https://www.coolworldslab.com/support→ Get merch: https://teespring.com/stores/cool-worlds-store→ Check out our podcast: www.youtube.com/@CoolWorldsPodcastTHANK-YOU to D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, J. Rockett, D. Murphree, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, W. Evans, D. Bansal, J. Curtin, J. Sturm, RAND Corp., M. Donovan, N. Corwin, M. Mangione, K. Howard, L. Deacon, G. Metts, R. Provost, B. Sigurjonsson, G. Fullwood, B. Walford, J. Boyd, N. De Haan, J. Gillmer, R. Williams, E. Garland, A. Leishman, A. Phan Le, R. Lovely, M. Spoto, A. Steele, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer, T. Edris, B. Seeley, F. Blood, M. O'Brien, P. Muzyka, D. Lee, J. Sargent, M. Czirr, F. Krotzer, I. Williams, J. Sattler, J. Smallbon, B. Reese, J. Yoder, O. Shabtay, X. Yao, S. Saverys, M. Pittelli, A. Nimmerjahn, C. Seay, D. Johnson, L. Cunningham, M. Morrow, M. Campbell, R. Strain, B. Devermont, & Y. Muheim.REFERENCES► Bekenstein, J. 1972, "Black Holes and Entropy", Physical Review D: https://ui.adsabs.harvard.edu/abs/1973PhRvD...7.2333B► Hawking, S. 1975, "Particle Creation by Black Holes", Communications In Mathematical Physics,: https://ui.adsabs.harvard.edu/abs/1975CMaPh..43..199H► Hooft, G.'t, 1993, "Dimensional Reduction in Quantum Gravity", General Relativity & Quantum Cosmology: https://ui.adsabs.harvard.edu/abs/1993gr.qc....10026T► Susskind, L. 1995, "The World as a Hologram", Journal of Mathematical Physics: https://ui.adsabs.harvard.edu/abs/1995JMP....36.6377S► Maldacena, J. 1997, "The Large N Limit of Superconformal field theories and supergravity", Advances in Theoretical and Mathematical Physics: https://ui.adsabs.harvard.edu/abs/1998AdTMP...2..231MMUSICLicensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via CC Attribution License (https://creativecommons.org/licenses/by/4.0/) or with permission from the artist.0:00 Hill - The Travelers [https://open.spotify.com/track/5EfCXFyDpZmu0u6hM3ByjK?si=76241b8ce56747a4]2:51 Chris Zabriskie - We Were Never Meant to Live Here4:30 Hill - The Great Alchemist [https://open.spotify.com/track/3PAx36jIsKiQMT9CQsRk4G?si=c00e84291e664f8e]9:33 Falls - Life in Binary11:55 Hill - A Slowly Lifting Fog [https://open.spotify.com/track/0GgkyL3y22kFslT6wUsKlt?si=3f07e63c56674a21]13:23 Falls - Ripley17:06 Chris Zabriskie - Cylinder Seven19:11 Joachim Heinrich - Y21:32 Indive - Halo DriveCHAPTERS0:00 Prologue0:30 Black Holes 1013:18 Storyblocks4:30 Unitarity6:19 Into the Black Hole7:19 Hawking Radiation9:33 Learn more about your ad choices. Visit megaphone.fm/adchoices
When you look the mirror, the image you see is accurate, right? Sure you left and right side get flipped, but what about your size, color and proportions? When we think about mirrors relativistically, there are a few strange (but tiny) effects which mean your appearance in the mirror is distorted. Cool Worlds explains what's going on, why it happens and how big an effect we are talking about.::More about this Video::► The following paper gives a derivation of why the law of reflection breaks down, although it not model the reaction of the mirror in response to the photon: Aleksandar Gjurchinovski, "Reflection from a moving mirror - a simple derivation using the photon model of light": https://arxiv.org/abs/1207.0998► Physics Girl, "Why do mirrors flip horizontally (but not vertically)?": https://www.youtube.com/watch?v=vBpxhfBlVLU► Vsauce, "What Color is a Mirror?": https://www.youtube.com/watch?v=-yrZpTHBEss► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu► Columbia University Department of Astronomy: http://www.astro.columbia.edu► Background music by MelodySheep "Secrets of the Stars": https://www.youtube.com/watch?v=BuxFXHircaI::Playlists For Channel::Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorldsCool Worlds Research ► http://bit.ly/CoolWorldsResearchGuest Videos ► http://bit.ly/CoolWorldsGuestsQ&A Videos ► http://bit.ly/CoolWorldsQAScience of TV/Film ► http://bit.ly/ScienceMovies::Follow us::SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribeCool Worlds Lab http://coolworlds.astro.columbia.eduTwitter https://twitter.com/david_kippingInstagram https://www.instagram.com/cool.worldsTHANKS FOR WATCHING!! Learn more about your ad choices. Visit megaphone.fm/adchoices
It’s possibly the most famous question in all of science - where is everyone? Join us today for deep dive into Fermi Paradox. 🌏 Get exclusive NordVPN deal here ➵ https://NordVPN.com/coolworlds It’s risk free with Nord’s 30 day money-back guarantee!✌The Fermi Paradox has been a topic of keen debate amongst scientists, astronomers and the rest of us for more than seven decades. We can't resist the urge to speculate about aliens! But what is the paradox even really about? What explanations have been offered? Today, we explore this famous question, and offer a mind-shifting explanation.Written and presented by Prof David Kipping.→ Support our research program: https://www.coolworldslab.com/support→ Get Stash here! https://teespring.com/stores/cool-worlds-storeTHANK-YOU to our supporters D. Smith, M. Sloan, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, N. Kildal, Z. Star, E. West, T. Zajonc, C. Wolfred, L. Skov, G. Benson, A. De Vaal, M. Elliott, B. Daniluk, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, C. Souter, M. Gillette, T. Jeffcoat, J. Rockett, D. Murphree, S. Hannum, T. Donkin, K. Myers, A. Schoen, K. Dabrowski, J. Black, R. Ramezankhani, J. Armstrong, K. Weber, S. Marks, L. Robinson, S. Roulier, B. Smith, G. Canterbury, J. Cassese, J. Kruger, S. Way, P. Finch, S. Applegate, L. Watson, E. Zahnle, N. Gebben, J. Bergman, E. Dessoi, J. Alexander, C. Macdonald, M. Hedlund, P. Kaup, C. Hays, W. Evans, D. Bansal, J. Curtin, J. Sturm, RAND Corp., M. Donovan, N. Corwin, M. Mangione, K. Howard, L. Deacon, G. Metts, G. Genova, R. Provost, B. Sigurjonsson, G. Fullwood, B. Walford, J. Boyd, N. De Haan, J. Gillmer, R. Williams, E. Garland, A. Leishman, A. Phan Le, R. Lovely, M. Spoto, A. Steele, M. Varenka, K. Yarbrough, A. Cornejo, D. Compos, F. Demopoulos, G. Bylinsky, J. Werner, B. Pearson, S. Thayer & T. Edris.::References::► Jones, E. B. 1985, "Where Is Everybody? An Account of Fermi's Question": https://sgp.fas.org/othergov/doe/lanl/la-10311-ms.pdf► Hart, M. H. 1975, "Explanation for the Absence of Extraterrestrials on Earth", QJRAS, 16, 128: https://ui.adsabs.harvard.edu/abs/1975QJRAS..16..128H► Tipler, F. J. 1980, "Extraterrestrial intelligent beings do not exist", QJRAS, 21, 267: https://ui.adsabs.harvard.edu/abs/1980QJRAS..21..267T► Wright, J. T., Kanodia, S. & Lubar, G. 2018, "How Much SETI Has Been Done? Finding Needles in the n-Dimensional Cosmic Haystack", AJ, 156, 260: https://arxiv.org/abs/1809.07252► Gray, R. H. 2015, "The Fermi Paradox is Neither Fermi's Nor a Paradox", Astrobiology, 15, 195: https://arxiv.org/abs/1605.09187► Freitas, R. A. Jr. 1985, "There is no Fermi Paradox", Icarus, 62, 518: https://ui.adsabs.harvard.edu/abs/1985Icar...62..518F► Sandberg, A., Drexler, E., Ord, T. 2018, "Dissolving the Fermi Paradox": https://arxiv.org/abs/1806.02404::Music::Music licensed by SoundStripe.com (SS) [shorturl.at/ptBHI], Artlist.io, via Creative Commons (CC) Attribution License (https://creativecommons.org/licenses/by/4.0/), or with permission from the artist.► Brad Hill - Echoes of Yesterday (0:00) [https://open.spotify.com/track/4AfA4TrR2WPUJ6N6Th5j8B?si=ecb4d3f6f25744cf]► Brad Hill - Circle (5:22) [https://open.spotify.com/track/5ahoF1JU8MMTgH7NIbZNvv?si=79c036a9ace4463c]► Falls - Life in Binary (9:38)► Brad Hill - The Great Alchemist (14:08) [https://open.spotify.com/album/0sfu5xfxKyQCxykRUlQATy]► Brad Hill - There Is But One Good (19:03) [https://open.spotify.com/track/1vlxAsmQaHJo1HyvYJF770]► Joachim Heinrich - Y (25:01)::Chapters::00:00 Introduction01:22 A Brief History06:13 Two Fermi Paradoxes08:16 Sponsorship09:38 The Eerie Silence11:56 Direct Fermi Paradox15:11 Capability?18:38 Motivation?20:53 Anthropicism25:01 Extragalactic SETI27:17 Outro & credits#fermiparadox #aliens #seti Learn more about your ad choices. Visit megaphone.fm/adchoices
You've probably heard about the recent news of the strange dimmings of Tabby's Star and the provoactive hypothesis of an alien megastructure (fi not check out http://bit.ly/TabbysStar). But could there be a natural explanation instead? Well two theoretical astrophycistss here at Columbia think so and here they briefly summarize some of the leading theories (although news ones are appearing almost every day!) and they think their own explanation is the best one so far.::More about this Video::► Metzger, Shen & Stone (2017), "Secular Dimming of KIC 8462852 Following its Consumption of a Planet": https://arxiv.org/abs/1612.07332► Montet & Simon (2016), "KIC 8462852 Faded Throughout the Kepler Mission": https://arxiv.org/abs/1608.01316► Schaefer (2016), "KIC 8462852 Faded at an Average Rate of 0.165+-0.013 Magnitudes Per Century From 1890 To 1989": https://arxiv.org/abs/1601.03256► Boyajian et al. (2016), "Planet Hunters X. KIC 8462852 - Where's the Flux?": https://arxiv.org/abs/1509.03622► Live Q&A on Cool Worlds with Tabby Boyajian: https://youtu.be/k_-6SEb2QlM► Cool Worlds video "What is an Alien Megastructure?" at https://youtu.be/tYHVCW3BkHU► Jason Wright's Cool Worlds video, "The Most Mysterious Star": https://youtu.be/jjh0oK7ZyfM► 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/NewCoolWorldsCool Worlds Research ► http://bit.ly/CoolWorldsResearchGuest Videos ► http://bit.ly/CoolWorldsGuestsQ&A Videos ► http://bit.ly/CoolWorldsQATabby's Star ► http://bit.ly/TabbysStarScience of TV/Film ► http://bit.ly/ScienceMovies::Follow us::SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribeCool Worlds Lab http://coolworlds.astro.columbia.eduTwitter https://twitter.com/david_kippingInstagram https://www.instagram.com/cool.worldsTHANKS FOR WATCHING!! Learn more about your ad choices. Visit megaphone.fm/adchoices