PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateSPACE ↓ More info below ↓ Sign Up on Patreon to get access to the Space Time Discord! https://www.patreon.com/pbsspacetime Check out the Space Time Merch Store https://pbsspacetime.com/ It’s time we talked about loop quantum gravity. What exactly is it? What are the loops? And can it really defeat string theory in our quest for a Theory of Everything? Hosted by Matt O Dowd Written by Graeme Gossel & Matt O Dowd Graphics by Leonardo Scholzer Directed by: Andrew Kornhaber Executive Producers: Eric Brown & Andrew Kornhaber End Credits Music by J.R.S. Schattenberg: https://www.youtube.com/channel/UCRl6-nb4iOnsij-vnpAjp0Q The holy grail of physics is to connect our understanding of the tiny scales of atoms and subatomic particles with that of the vast scales of planets, galaxies, and the entire universe. To connect quantum physics with Einstein’s general theory of relativity. Our search for a theory of quantum gravity is a century old, and we’ve talked quite a bit about it already, including what’s probably the lead contender - string theory. But string theory isn’t the only game in town - or so some physicists believe. There may be another way to reconcile the physics of the tiny and the gigantic - another way to a theory of quantum gravity that avoids a lot of conceptual baggage like tiny wiggling strings made of coiled up extra dimensions. That other way would be loop quantum gravity, and today we’re going to learn exactly what it is. Special Thanks to Our Patreon Supporters Big Bang Supporters: David Barnholdt David Boyer David Nicklas Fabrice Eap Juan Benet matt miller Morgan Hough Quasar: Mark Heising Mark Rosenthal Vinnie Falco Hypernova: chuck zegar Danton Spivey Donal Botkin Edmund Fokschaner Hank S joe pearce John Hofmann John R. Slavik Jordan Young Joseph Salomone Mathew Matthew O Connor Syed Ansar Gamma Ray Burst: A G Adrien Molyneux AlecZero Andreas Nautsch Bradley Jenkins Brandon labonte Brian Dan Warren Daniel Lyons David Bethala DFaulk Frederic Simon Geoffrey Short Graydon Goss Greg Smith James Flowers John Funai John Griffith John Michael Kerr John Pollock John Robinson Jonathan Nesfeder Joseph Dillman Josh Thomas Kevin Lee Kevin Warne Kyle Hofer Malte Ubl Nick Virtue Nick Wright Paul Rose Scott Gossett Sean Warniaha Tim Stephani Tonyface Yurii Konovaliuk

NASA unveiled their next generation Artemis spacesuits on Oct. 15, 2019. -- NASA Wants to Test New Moon Spacesuits on the Space Station in 2023: https://www.space.com/nasa-xemu-moon-spacesuit-2023-test.html Credit: NASA

Chronicling the romantic life of Britain s royal family in the 20th century, this documentary explores the history of royal marriages and asks what s next for a royal family increasingly battered by media pressures and whose business is shared with the whole world. It s like Netflix for history... Sign up to History Hit, the world s best history documentary service, at a huge discount using the code TIMELINE ---ᐳ http://bit.ly/3a7ambu You can find more from us on: https://www.facebook.com/timelineWH https://www.instagram.com/timelineWH This channel is part of the History Hit Network. Any queries, please contact owned-enquiries@littledotstudios.com

Sign up for an annual CuriosityStream subscription and also get a free Nebula subscription (the new streaming platform built by creators) here: https://www.curiositystream.com/reallifelore Check out my new channel RLL2! https://www.youtube.com/channel/UCqmD... Follow Joseph from RLL on Instagram: https://www.instagram.com/joseph_pisenti/?hl=en Please Subscribe: http://bit.ly/2dB7VTO Animations courtesy of Lili Pereira. Check out her channel here! https://www.youtube.com/user/HelloLil...

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Help support the channel and get a 30-day free trial with CuriosityStream with the code knowledgia at http://go.thoughtleaders.io/1777320200309 to get unlimited access to the world’s top documentaries. Why did Ancient Egypt Collapse? ♦Consider to Support the Channel of Patreon and gain cool stuff: https://www.patreon.com/Knowledgia ♦Please consider to SUBSCRIBE : https://goo.gl/YJNqek ♦Narrated by : Callum Janes ♦Music Used : Kevin MacLeod - Impact Allegretto Kevin MacLeod - Drums of the Deep Kevin MacLeod - BTS Prolog Kevin MacLeod - Thinking Music Singularity by Evan King Music used: Nomadic Sunset by Alexander Nakarada @ SerpentSound Studios Shattered Helium - Under The Sky CTION CINEMATIC DYNAMIC DRUMS BACKGROUND MUSIC ♦Sources : https://www.ancient-egypt-online.com/fall-of-ancient-egypt.html https://www.britannica.com/place/ancient-Egypt Allen, James P. (2000). Middle Egyptian: An Introduction to the Language and Culture of Hieroglyphs. Cambridge: Cambridge University Press. ISBN 978-0-521-77483-3. Shaw, Ian (2003). The Oxford History of Ancient Egypt. Oxford: Oxford University Press. ISBN 978-0-19-280458-7. #History #Documentary

寬約70公尺的達瓦札天然氣燃燒坑（Darvaza gas crater）自1971年便不斷地噴出高壓天然氣，但它的形成原因至今仍不明瞭。這裡原本可能有座鑽探平臺，但下方的土石塌陷了，於是蘇聯科學家便放火，試圖燒掉漏出的有毒氣體 …… ★想看到最新鮮影片或與國家地理小編聊天互動的請訂閱★ 更多精彩內容在國家地理官網：http://www.natgeomedia.com/ 歡迎來國家地理粉絲頁按讚：https://www.facebook.com/natgeomedia/ 請在Instagram上關注我們：https://goo.gl/1rRAI8

Click https://skl.sh/coldfusion to get 2 months of Skillshare for FREE! --- About ColdFusion --- ColdFusion is an Australian based online media company independently run by Dagogo Altraide since 2009. Topics cover anything in science, technology, history and business in a calm and relaxed environment. If you enjoy my content, please consider subscribing! I m also on Patreon: https://www.patreon.com/ColdFusion_TV Bitcoin address: 13SjyCXPB9o3iN4LitYQ2wYKeqYTShPub8 --- ColdFusion Book written by Dagogo Altraide --- Learn about the individuals who invented everything we use everyday. https://newthinkingbook.squarespace.com/about/ Get the book on Amazon: http://bit.ly/NewThinkingbook Get the book on Google Play: http://bit.ly/NewThinkingGooglePlay --- ColdFusion Social Media --- » Twitter | @ColdFusion_TV » Instagram | coldfusiontv » Facebook | https://www.facebook.com/ColdFusionTV --- ColdFusion Podcast links --- Google Podcasts - http://bit.ly/2xo8doR Apple Podcasts - https://apple.co/2WI2IeU Spotify - https://spoti.fi/2KT1taB Stitcher - http://bit.ly/2WI4f4E Script by Fil Zivko Sources: https://www.wsj.com/articles/how-to-understand-alibabas-latest-shopping-trip-11568033929 https://www.inc.com/business-insider/alibaba-jack-ma-life-story.html https://graphics.wsj.com/alibaba/ https://www.bloomberg.com/news/articles/2015-01-29/alibaba-s-jack-ma-on-early-obstacles-his-ambitions https://www.bloomberg.com/news/articles/2019-09-24/alibaba-closes-acquisition-of-a-third-of-jack-ma-s-ant-financial https://www.bloomberg.com/news/articles/2011-04-14/how-ebay-found-a-secret-way-into-china https://www.wsj.com/articles/for-chinas-tech-giants-success-stops-at-the-border-11568043193 https://www.afr.com/companies/retail/alibabas-rise-creates-at-least-10-billionaires-not-named-jack-ma-20171113-gzk0bd Crocodile in the Yangtze (2012) Film //Soundtrack// **coming soon** » Music I produce | http://burnwater.bandcamp.com or » http://www.soundcloud.com/burnwater » https://www.patreon.com/ColdFusion_TV » Collection of music used in videos: https://www.youtube.com/watch?v=YOrJJKW31OA Producer: Dagogo Altraide Why are you still reading?

Go to http://curiositystream.com/biographics for unlimited access to the world’s top documentaries and non­fiction series, and for our listeners, enter the promo code ‘biographics’ when prompted during the sign­up process and your membership is completely free for the first 30 days. Check my other channel TodayIFoundOut! https://www.youtube.com/user/TodayIFoundOut → Subscribe for new videos four times per week. https://www.youtube.com/c/biographics?sub_confirmation=1 This video is #sponsored by Curiosity Stream. TopTenz Properties Our companion website for more: http://biographics.org Our sister channel TopTenz: https://www.youtube.com/channel/UCQ-hpFPF4nOKoKPEAZM_THw/ Our Newest Channel about Interesting Places: https://studio.youtube.com/channel/UCHKRfxkMTqiiv4pF99qGKIw Credits: Host - Simon Whistler Author - Morris M. Producer - Jennifer Da Silva Executive Producer - Shell Harris Business inquiries to biographics.email@gmail.com Other Biographics Videos: Otto Skorzeny: The Most Dangerous Man in Europe https://youtu.be/WrKwysaZIww Robert Hanssen: The FBI Mole who Spied for the KGB https://youtu.be/v40HN6dNaAk Source/Further reading: Britannica biography: https://www.britannica.com/biography/Franz-Joseph Habsburg biography: https://www.habsburger.net/en/chapter/franz-joseph-childhood-and-upbringing 1848 in Austria (plus some general Austrian history): https://www.britannica.com/place/Austria/Revolution-and-counterrevolution-1848-59 The Jewish view of Franz-Josef: https://www.jewishvirtuallibrary.org/franz-joseph-i

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#dog #drone #cabin Cali my Golden Retriever and I explore the incredible scenery of eastern Canada in the fall and have a shore lunch of wild duck with fresh wild cranberries and maple sugar that I made in the spring. Thanks for watching! New videos every FRIDAY. Please subscribe. My Other Channel: Shawn James https://bit.ly/2xzZHpB T-SHIRTS: https://teespring.com/stores/my-self-reliance Watch the playlists by clicking on these links: Building an Off Grid Sauna: https://bit.ly/2IjvJsQ Building a Log Cabin with Hand Tools: https://bit.ly/2MeEoOs Building an Outdoor Forest Kitchen: https://bit.ly/2AFQJ99 Best of My Self Reliance: https://bit.ly/2OfW7ry To see what I’m up to during the rest of the week, please follow me on my other online channels; Website: http://myselfreliance.com/ Facebook – https://www.facebook.com/MySelfReliance/ Instagram – https://www.instagram.com/myselfreliance/ My Mailing Address: P.O. Box 20042 Barrie, Ontario L4M 6E9 Canada My Tools, Clothing & Other Gear: https://www.amazon.com/shop/myselfreliance Cabelas: https://bit.ly/2AEp48v

- ways to support - My Patreon: https://www.patreon.com/johnnyharris Our custom Presets & LUTs: https://store.dftba.com/products/johnny-iz-luts-and-presets - where to find me - Instagram: https://www.instagram.com/johnny.harris/ Tiktok: https://www.tiktok.com/@johnny.harris Facebook: https://www.facebook.com/JohnnyHarrisVox Iz s (my wife’s) channel: https://www.youtube.com/iz-harris - how i make my videos - Tom Fox makes my music, work with him here: https://tfbeats.com/ I make maps using this AE Plugin: https://aescripts.com/geolayers/?aff=77 All the gear I use: https://www.izharris.com/gear-guide - my courses - Learn a language: https://brighttrip.com/course/language/ Visual storytelling: https://www.brighttrip.com/courses/visual-storytelling - about - Johnny Harris is a filmmaker and journalist. He currently is based in Washington, DC, reporting on interesting trends and stories domestically and around the globe. Johnny s visual style blends motion graphics with cinematic videography to create content that explains complex issues in relatable ways. He holds a BA in international relations from Brigham Young University and an MA in international peace and conflict resolution from American University. - press - NYTimes: https://www.nytimes.com/2021/11/09/opinion/democrats-blue-states-legislation.html NYTimes: https://www.nytimes.com/video/opinion/100000007358968/covid-pandemic-us-response.html Vox Borders: https://www.youtube.com/watch?v=hLrFyjGZ9NU Finding Founders: https://findingfounders.co/episodes/johnny-harris-2esj3-c3pet-2pg4c-xbtwa-5gaaa NPR Planet Money: https://www.npr.org/transcripts/1072164745

- Four Unknown Persons Were Crossing My Property For The 2nd Day In A Row. Me And My Buddy Dima Decided To Track Them Down And Find Out What They Were Up To. We Found Them On The Trans-Siberian Railway. Support The Survival-Russia Channel Patreon: https://www.patreon.com/SurvivalRussia PayPal: https://www.paypal.me/SuRussiaSupport My Favorite Brands and Online Shops Silky Saws: https://www.silky-europe.com/ Russian Tents And Stoves: https://bereg-ekat.ru/ Axes And Tools: https://petrograd-tools.com/ Gear: Yamaha TW200 2007 Sony AS100V Sony FDR-X3000 Panasonic HC-V770 -►Instagram: https://www.instagram.com/survivalrussia/ -►Subscribe: http://www.youtube.com/subscription_center?add_user=Moscowprepper Welcome To Survival-Russia. One of the very best Outdoors and Survival related communities on YouTube, and yes, It s a pretty good Channel too :) My name is Lars. I m From Denmark but I live in Rural Russia now. I live at a Homestead in wild nature surrounded by a huge forest. On The Survival-Russia channel we do all things related to the Outdoors Lifestyle. I share my thoughts and experiences on Survival Techniques for the woodlands of the Northern Hemisphere. the Reality of Survival. I share Techniques and ways of the Siberian Tribesmen and the Russian Longhunters of the older days. Things not shown outside of Russia very much. On this Channel we also do Off-Road driving, Vehicle builds, Metal Detecting, all things Outdoors basically. Enjoy!

We re in the woods building a bushcraft saxon house using hand tools. In part 12 we use an auger and hand drill to build the door, we then use long straw or combed straw to cap the ridge on the top of the thatch roof of the saxon shelter. The combed straw is called "triticale" and is a mix of wheat and rye. The reason we used it to build the top of the roof is because it is much more pliable and easy to bend then water reed. It also has the disease resistance of wheat and the hardiness of rye, which makes it last longer on the roof. To finish off the roof, I used a barrel eye scotch auger and some hand carved wood pegs to fix some cross supports to the top of the thatch roof. This will help pin down the ash liggers (battens) and keep the thatch pinned down during heavy rain and wind. We finish the clay walls inside, using the wattle and daub technique. The Saxon House is now pretty much finished. We have tried to keep it as historically correct as we could. But for things such as the door, we used recycled pallet wood and iron hinges. The reason we did this is because we wanted the door to last and not rot away. It has been an incredible experience building with hand tools. Working with nature to create an ancient home of our ancestors. The Anglo Saxons were very resourceful and would have used whatever natural materials they could find to build their bushcraft shelters and wood houses. DAD S CHANNEL TA FISHING: https://www.youtube.com/tafishing GET TA OUTDOORS MERCHANDISE: https://taofficial.com TA OUTDOORS PATCHES: https://www.taoutdoors.com/shop/ INSTAGRAM: https://www.instagram.com/taoutdoorofficial FACEBOOK: https://www.facebook.com/totallyawesomeoutdoors TWITTER: https://twitter.com/OutdoorsTa FILMING & CAMERA GEAR I USE: Main Camera: https://amzn.to/2SG9unv Drone: https://amzn.to/2WSQ1za Standard Lens: https://amzn.to/2E5LFxs Wide Angle Lens: https://amzn.to/2E3U6t0 Zoom Lens: https://amzn.to/2tfb4yl 50mm fixed Lens: https://amzn.to/2BvUAGN Main Camera Microphone: https://amzn.to/2I9tVVQ Secondary Camera Mic: https://amzn.to/2WYP3RQ Radio Microphone: https://amzn.to/2Ifqaym Camera Light: https://amzn.to/2MYA4mn Powerbank: https://amzn.to/2WYQVdk Tripod: https://amzn.to/2DtumVm GoPro Action Cam: https://amzn.to/2UPS9Wx GoPro Chest Mount: https://amzn.to/2tfCkwu GoPro Head Mount: https://amzn.to/2WWBra3 Camera SD Cards: https://amzn.to/2WVWcT5 Editing Laptop: https://amzn.to/2BtRK4S BUSHCRAFT GEAR I USE: Bushcraft Pants/Trousers: https://amzn.to/2SFY8jf 3x3 Metre Tarp: https://amzn.to/2IjM4Az Hammock: https://amzn.to/2N0Vpvx Hammock underblanket: https://amzn.to/2GmeBmT Thermal Camping Air Mattress: https://amzn.to/2N0uQXs Awesome Affordable Bushcraft Knives: https://amzn.to/2SLhWle Medium Axe: https://amzn.to/2E5NBWK Gransfors Bruks Small Forest Axe: https://amzn.to/2E5FkC1 Small Hatchet: https://amzn.to/2I319Gb Affordable Firesteel: https://amzn.to/2N1D3L8 Folding Camp Grill: https://amzn.to/2BvF6lM Durable GPS Watch: https://amzn.to/2N1fQZl #bushcraft #building #offgrid

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Support 16 Days in Berlin: https://realtimehistory.net/indiegogo The White Russian advance on Moscow comes to a crashing end as the Red Army manages to turn the tide of the Russian Civil War in Fall 1919.   » SUPPORT THE CHANNEL Patreon: https://www.patreon.com/thegreatwar  Become a member: https://www.youtube.com/channel/UCUcyEsEjhPEDf69RRVhRh4A/join   » OUR PODCAST https://realtimehistory.net/podcast - interviews with World War 1 historians and background info for the show.   » BUY OUR SOURCES IN OUR AMAZON STORES https://realtimehistory.net/amazon * *Buying via this link supports The Great War (Affiliate-Link)   » SOURCES  Figes, Orlando. A People’s Tragedy. The Russian Revolution (London: The Bodley Head, 2017 [1996]). Mawdsley, Evan. The Russian Civil War (New York: Pegasus Books, 2005). Smele, Jonathan. The ‘Russian’ Civil Wars 1916-1926 (London: Hurst, 2015). Sumpf, Alexandre. “Russian Civil War,” in 1914-1918 online. International Encyclopedia of the First World War. https://encyclopedia.1914-1918-online. Engelstein, Laura. Russia in Flames (Oxford University Press, 2017). » MORE THE GREAT WAR Website: https://realtimehistory.net  Facebook: https://facebook.com/TheGreatWarYT Instagram: https://instagram.com/the_great_war Twitter: https://twitter.com/WW1_Series Reddit: htpps://reddit.com/r/TheGreatWarChannel   » OTHER PROJECTS  16 DAYS IN BERLIN: https://realtimehistory.net/pages/16-days-in-berlin   »CREDITS Presented by: Jesse Alexander Written by: Jesse Alexander Director: Toni Steller & Florian Wittig Director of Photography: Toni Steller Sound: Toni Steller Editing: Toni Steller Motion Design: Philipp Appelt Mixing, Mastering & Sound Design: http://above-zero.com Maps: Daniel Kogosov (https://www.patreon.com/Zalezsky) Research by: Jesse Alexander Fact checking: Florian Wittig   Channel Design: Alexander Clark Original Logo: David van Stephold   Contains licensed material by getty images All rights reserved - Real Time History GmbH 2020

The long and brutal history of the US trying to “kill the Indian and save the man”. Help our reporting on hidden histories. Submit a story idea here: http://bit.ly/2RhjxMy Toward the end of the 19th century, the US took thousands of Native American children and enrolled them in off-reservation boarding schools, stripping them of their cultures and languages. Yet decades later as the US phased out the schools, following years of indigenous activism, it found a new way to assimilate Native American children: promoting their adoption into white families. Watch the episode to find out how these two distinct eras in US history have had lasting impacts on Native American families. In the Vox series Missing Chapter, Vox Senior Producer Ranjani Chakraborty revisits underreported and often overlooked moments from the past to give context to the present. Join her as she covers the histories that are often left out of our textbooks. Our first season tackles stories of racial injustice, political conflicts, even the hidden history of US medical experimentation. Have an idea for a story that Ranjani should investigate for Missing Chapter? Send it to her via this form! http://bit.ly/2RhjxMy Sign up for the Missing Chapter newsletter to stay up to date with the series:  https://vox.com/missing-chapter Explore the full Missing Chapter playlist, including episodes, a creator Q&A, and more! https://www.youtube.com/playlist?list=PLJ8cMiYb3G5fR2kt0L4Nihvel4pEDw9od And to learn more, check out some of our sources below: The National Native American Boarding School Healing Coalition https://boardingschoolhealing.org/ and their primer on American Indian and Alaska Native Boarding Schools in the US: https://engagement.umn.edu/sites/engagement.umn.edu/files/NABS%20Healing%20Voices_Vol%201_FINAL_Spreads%20for%20web.pdf A Generation Removed by Margaret D. Jacobs: https://www.nebraskapress.unl.edu/university-of-nebraska-press/9780803255364/ The National Indian Child Welfare Association’s background on the Indian Child Welfare Act: https://www.nicwa.org/about-icwa/ Maps:  1776 - 1880 here: https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~238678~5511614:Indian-Land-Cessions- 1930 here: https://www.davidrumsey.com/luna/servlet/detail/RUMSEY~8~1~248302~5516048 First Nations Repatriation Institute: http://wearecominghome.com An in-depth documentary about Native American child separation: https://upstanderproject.org/dawnland Vox.com is a news website that helps you cut through the noise and understand what s really driving the events in the headlines. Check out http://www.vox.com. Watch our full video catalog: http://goo.gl/IZONyE Follow Vox on Facebook: http://goo.gl/U2g06o Or Twitter: http://goo.gl/XFrZ5H