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Be Smart.

Joe Hanson

We give you deep answers to simple questions about science and the rest of the universe. And also dad jokes. Be Smart is hosted by Joe Hanson, PhD. He's a molecular biologist and an award-winning science communicator and journalist

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  • Yesterday · 10 min

    Antibiotic Resistance and the Ascent of Superbugs

    ----------------- It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.D Follow me on Twitter/Instagram: @DrJoeHanson @okaytobesmart Email me: itsokaytobesmart AT gmail DOT com Facebook: http://www.facebook.com/itsokaytobesmart For more awesome science, check out: http://www.itsokaytobesmart.com Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Joe Hanson - Creator/Host/Writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen Inc Kate Eads - Associate Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Director of Photography John Knudsen - Gaffer Dalton Allen - Post-Production Intern Theme music: "Ouroboros" by Kevin MacLeod Other music via APM Stock images from Shutterstock, stock footage from Videoblocks ----------------- Last week's video: The Recipe For Life https://www.youtube.com/watch?v=tuBWjY9BpEc More videos: Why Does February Have 28 Days? https://www.youtube.com/watch?v=AgKaHTh-_Gs Why Vaccines Work https://www.youtube.com/watch?v=3aNhzLUL2ys Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA Where Does the Smell of Rain Come From? https://www.youtube.com/watch?v=lGcE5x8s0B8 Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 9 min

    97% of Climate Scientists Really Do Agree

    Subscribe to HOT MESS! ►► http://bit.ly/hotmess_sub Watch the first episode: https://youtu.be/LKhGg0jDZTc ↓↓↓ More info and sources below ↓↓↓ Uploaded 19-04-18 Do 97% of climate scientists really agree that humans are the main cause of climate change? Yep! Here’s what the 97 percent statistic *really* means. Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub REFERENCES: http://bit.ly/2HJHMOK ----------- FOLLOW US: Twitter:@DrJoeHanson @okaytobesmart Instagram: @DrJoeHanson Merch: https://store.dftba.com/collections/its-okay-to-be-smart Facebook: http://www.facebook.com/itsokaytobesmart SEND US STUFF: It’s Okay To Be Smart PO Box 303356 Austin, TX 78703 USA BOOKS WE’VE FEATURED: http://smart-books.tumblr.com/ ----------- It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D. Director: Joe Nicolosi Writer: Joe Hanson, Ph.D. Creative Director: David Schulte Editor/animator: Derek Borsheim Producer: Stephanie Noone and Amanda Fox Produced by PBS Digital Studios Music via APM Stock images from Shutterstock http://www.shutterstock.com Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 13 min

    How Do We Measure How Vast the Universe Is?

    Watch me host @HighSchoolQuizShow! https://www.youtube.com/@HighSchoolQuizShow Join our Patreon community: https://www.patreon.com/itsokaytobesmart ↓↓↓ More info and sources below ↓↓↓ Since the time of the ancient Greeks, scientists have been constructing a cosmic measuring tape to measure the universe from our own backyard all the way to its ever-expanding edge: the cosmic distance ladder. In this video, we climb that ladder and explore how each rung has revealed something new and previously unthinkable about the universe we live in. References: https://sites.google.com/view/cosmic-distance-references/home 0:00 How far away are things? 1:05 Near, far, parallax that star 3:25 Island universes and Hubble's blinking star 5:51 Redshifted rainbows and the expanding universe 7:41 Supernovae and the end of everything 9:08 Conclusion: The ladder of discovery 10:00 I'm hosting a game show! ----------- High fives to all our Brain Trust Patrons: Ed Eyden Jennifer Burton Charles Horton, Jr Holly, Brett, and Ashe Bullion Jaap Westera Mehdi Damou Barbora Bei Burt Humburg dani bowman David Johnston Baerbel Winkler Eric Meer Karen Haskell Join us on Patreon! https://patreon.com/itsokaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Merch https://store.dftba.com/collections/its-okay-to-be-smart​ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 10 min

    Glass is Solid… So Why Is It Clear?

    Thank you to CuriosityStream for supporting PBS! For more information, go to https://curiositystream.com/smart and USE code SMART. ↓↓↓ More info and sources below ↓↓↓ Uploaded 23-12-20 PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY Follow me to Overview on PBS Terra! https://www.youtube.com/watch?v=hjez0W8SPXc Glass is made of sand, which is a kind of rock. But glass is transparent, and rocks aren’t transparent. What’s up with that? Why is glass clear? And why can I sit on a chair? And why can we touch anything? Today we zoom down to the weird world of electron clouds and quantum touching to find the answers. We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ----------- Special thanks to our Brain Trust Patrons: Ahmed Elkhanany Emile Edhouse Zenimal Salih Arslan Baerbel Winkler Denzel Holmes Robert Young Amy Sowada Benjamin Teinby Eric Meer Jay Stephens Peter Ehrnstrom Oliver and Arden Bradshaw Dustin Marcus Tuepker George gladding vincbis . Karen Haskell AlecZero Diego Lombeida Zenimal Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 7 min

    Could We Recreate Ourselves?

    Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Just be yourself! Or be your other self. Whichever. Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Is the science of Orphan Black realistic? Could we clone humans, or engineer them to have customized traits? We take a look at today's genetic engineering technologies to find out if designer babies and human cloning is, or should be, a reality BOOKS! For more on the modern science of cloning and genetic modification, read the book "Frankenstein's Cat" by Emily Anthes: http://amzn.to/1zsVizw Chinese scientists have edited the genome of human embryos (sadly this news came out after we had filmed): http://www.theverge.com/2015/4/23/8477491/human-genome-editing-embryo-china-crispr How CRISPRs work: https://www.youtube.com/watch?v=2pp17E4E-O8 Scientists call for a moratorium on human gene editing: http://www.nytimes.com/2015/03/20/science/biologists-call-for-halt-to-gene-editing-technique-in-humans.html?_r=1 Three-parent babies: http://www.nytimes.com/2014/06/29/magazine/the-brave-new-world-of-three-parent-ivf.html Have an idea for an episode or an amazing science question you want answered? Leave a comment below! Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe ----------------- It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.DFollow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: http://www.facebook.com/itsokaytobesmart Google+ https://plus.google.com/+itsokaytobesmart For more awesome science, check out: http://www.itsokaytobesmart.com Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Joe Hanson - Creator/Host/Writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Director of Photography John Knudsen - Gaffer Dalton Allen - Post-Production Intern Theme music: "Ouroboros" by Kevin MacLeod Other music via APM Stock images from Shutterstock, stock footage from Videoblocks ----------------- Last week's video: Is Ultron Inevitable? https://www.youtube.com/watch?v=-Irmtk5QG8s More videos: Why Does February Have 28 Days? https://www.youtube.com/watch?v=AgKaHTh-_Gs Why Vaccines Work https://www.youtube.com/watch?v=3aNhzLUL2ys Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA Where Does the Smell of Rain Come From? https://www.youtube.com/watch?v=lGcE5x8s0B8​ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Yesterday · 15 min

    The Transcontinental Burrito Hypertunnel (is it Possible?)

    PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Uploaded 01-04-21 We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub The finest burritos in the world are made in San Francisco’s Mission District. But how can you get a hot and fresh one in New York City in time for lunch? Physics, that’s how. For this very serious and scientific video, we dug a classic documentary out of the vault that tells the story of the transcontinental burrito tunnel, and its successor, the transcontinental burrito hypertunnel. They are both true marvels of physics. Oh, and they aren’t real… but the science is. References: https://sites.google.com/view/burrito-tunnel-references/home ----------- Big Thank you to our Brain Trust Patrons: Robert Brian Chang Roy Lasris Javier Soto dani bowman David Johnston Ahmed Elkhanany Zenimal Salih Arslan Baerbel Winkler Robert Young Amy Sowada Benjamin Teinby Eric Meer Jay Stephens Peter Ehrnstrom Dustin Marcus Tuepker Karen Haskell AlecZero Diego Lombeida Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 9 min

    How These Ants Swept Across the U.S. 🔥🔥🔥🔥🔥

    And how we're fighting back! Don't miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Get yourself an awesome IOTBS shirt! http://dftba.com/besmart Special thanks to Dr. Rob Plowes from the University of Texas at Austin fire ant research lab for letting us come film their ants and phorid flies: http://www.sbs.utexas.edu/fireant/Research%20Program.html If you want to learn everything there is to know about fire ants, read "The Fire Ants" by Walter R. Tschinkel http://amzn.to/1U8jz1S Check your local library! https://www.worldcat.org/title/fire-ants/oclc/64379652 Rachel Carson - "Silent Spring" http://amzn.to/20QwWbM Fire ant raft - Matt Bennett https://www.youtube.com/watch?v=FA-e65i3bDs Fire ant escape rafts - Company of biologists https://www.youtube.com/watch?v=UxjT99l0mqw ---- Have an idea for an episode or an amazing science question you want answered? Leave a comment or check us out at the links below! Like us on Facebook: http://www.facebook.com/itsokaytobesmart Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/drjoehanson Follow on Instagram: http://instagram.com/DrJoeHanson ----------------- It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.D. Follow me on Twitter: @jtotheizzoe Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Music via APM Stock images from SciencePhoto http://www.sciencephoto.com/ and Shutterstock http://www.shutterstock.com Stock footage from Videoblocks (unless otherwise noted) http://www.videoblocks.com​ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 8 min

    Ask Joe Matters #1

    PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ You guys asked me questions, so I answered them! SUBSCRIBE and get more great science, it's FREE! -- http://bit.ly/iotbs_sub Engineering RuBisCo to make better carbon-capturing plants: http://www.plantphysiol.org/content/155/1/27.full The paradox of the plankton and Gause's law: http://www.biodiverseperspectives.com/2013/02/02/the-paradox-of-the-phytoplankton-why-do-we-have-so-many-species/ Written and hosted by Joe Hanson Produced by Joe Nicolosi (http://joe-nicolosi.com/) PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 5 min

    How Many Stars Can We Count?

    Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Counting stars from the shore of the cosmic ocean… Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ LIKE THE SHIRT I'M WEARING? It's glow in the dark! You can get it here (along with space undies and other good stuff): https://www.etsy.com/shop/makeitgoodpdx How many stars are there in the universe? Are there more stars out there than grains of sand on Earth? Thanks to advanced space telescopes, we've been able to peer farther into deep time and the distant universe than we ever thought possible, and we might finally be able to answer these mind-boggling questions Every star visible from Earth (naked eye): http://en.wikipedia.org/wiki/Bright_Star_Catalogue Number of stars in the universe (estimated): http://www.universetoday.com/102630/how-many-stars-are-there-in-the-universe/ Hubble gigapixel image of Andromeda: http://www.spacetelescope.org/images/heic1502a/ Hubble eXtreme Deep Field: http://xdf.ucolick.org/ How big is the sky? http://www.badastronomy.com/bitesize/bigsky.html How much sand is there on Earth? http://www.hawaii.edu/suremath/jsand.html What would the cosmic sandbox look like? https://what-if.xkcd.com/83/ Carl Sagan's Cosmos: "The Shore of the Cosmic Ocean": https://www.youtube.com/watch?v=Pa1ImgOcOPM Have an idea for an episode or an amazing science question you want answered? Leave a comment below! Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe ----------------- It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.DFollow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: http://www.facebook.com/itsokaytobesmart Google+ https://plus.google.com/+itsokaytobesmart For more awesome science, check out: http://www.itsokaytobesmart.com Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Joe Hanson - Creator/Host/Writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Director of Photography John Knudsen - Gaffer Dalton Allen - Post-Production Intern Theme music: "Ouroboros" by Kevin MacLeod Other music via APM Stock images from Shutterstock ----------------- Last week's video: What Color Is The Universe https://www.youtube.com/watch?v=ibVofIHq71s More videos: Why Does February Have 28 Days? https://www.youtube.com/watch?v=AgKaHTh-_Gs Why Vaccines Work https://www.youtube.com/watch?v=3aNhzLUL2ys Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA Where Does the Smell of Rain Come From? https://www.youtube.com/watch?v=lGcE5x8s0B8​ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 9 min

    The Secret To Life…

    Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate We're cookin' in the primordial kitchen! Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ If the human body could be distilled down into one molecule, what would our chemical formula be? And WHY is it that way? Is that one scene from Full Metal Alchemist even a little bit true? There's a whole lot of elements on the periodic table, but life depends on relatively few of them in order to build all the things that keep us alive. This week, we'll look at why the chemistry of life is the way it is… Special thanks to my miniature co-star Jimmy and his mom Kelly Malek! Full Metal Alchemist ingredients for human body: https://www.youtube.com/watch?v=_2Oiy3Z2m0c All the elements in the human body: http://web2.airmail.net/uthman/elements_of_body.html Could non-carbon-based life forms exist? http://www.reddit.com/r/askscience/comments/2v5vij/can_noncarbon_based_lifeforms_exist/ The chemistry of life: http://www.livescience.com/3505-chemistry-life-human-body.html The elemental difference between life and the ocean: http://www.mso.anu.edu.au/~charley/papers/ChopraLineweaver8assc%20proceedings.pdf We're born wet, and then we dry out: http://www.npr.org/blogs/krulwich/2013/11/25/247212488/born-wet-human-babies-are-75-percent-water-then-comes-drying http://water.usgs.gov/edu/propertyyou.html Market price of elements: http://en.wikipedia.org/wiki/Prices_of_elements_and_their_compounds Have an idea for an episode or an amazing science question you want answered? Leave a comment below! Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe ----------------- It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.DFollow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: http://www.facebook.com/itsokaytobesmart Google+ https://plus.google.com/+itsokaytobesmart For more awesome science, check out: http://www.itsokaytobesmart.com Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Joe Hanson - Creator/Host/Writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Director of Photography John Knudsen - Gaffer Dalton Allen - Post-Production Intern Theme music: "Ouroboros" by Kevin MacLeod Other music via APM Stock images from Shutterstock, stock footage from Videoblocks ----------------- Last week's video: %$?# Allergies! https://www.youtube.com/watch?v=sqrnShjM4II More videos: Why Does February Have 28 Days? https://www.youtube.com/watch?v=AgKaHTh-_Gs Why Vaccines Work https://www.youtube.com/watch?v=3aNhzLUL2ys Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA Where Does the Smell of Rain Come From? https://www.youtube.com/watch?v=lGcE5x8s0B8 Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 5 min

    Building Music From Space!

    PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Check out some beautiful music made from space itself Click here to SUBSCRIBE, it's FREE! -- http://bit.ly/iotbs_sub There is no sound in space. In the near-vacuum of space, there is nothing to transmit the physical waves that we need to perceive sound. But that doesn't mean we can't MAKE sound from space. This week, I feature several artists using scientific data to create "space sonification" projects. From the longest palindrome ever created to a chorus created from Earth's magnetic field, these pieces lie at the intersection of art and science. More than just art, they allow us to perceive patterns in complex data in a completely new way Perhaps it answers the question: If the universe had a voice, what song would it sing? FULL Versions of Pieces Featured: Robert Alexander - Transit of Venus http://www.itsokaytobesmart.com/post/42845983348/robert-alexander-solar-sonification Semiconductor Films - "20 Hz" http://www.itsokaytobesmart.com/post/44264199289/20-hz-auroras-as-sound Van Allen Belt chorus http://www.itsokaytobesmart.com/post/32692373350/chorus-van-allen-belts Daniel Starr-Tambor - "Mandala" http://www.itsokaytobesmart.com/post/15977543553/mandala-a-planetary-musical-palindrome-by-daniel (this piece is the longest palndrome ever created, at 62 viginitillion notes!!) Written and hosted by Joe Hanson Produced by Painted On Productions (http://www.paintedon.com/) ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 9 min

    Ask Joe Anything #5

    You've got questions, I've got answers! Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Subscribe to It's Okay To Be Smart: http://bit.ly/iotbs_sub Big thank you to the 7th and 8th graders from Northwest Middle School in Salt Lake City, UT! Great questions! Have an idea for an episode or an amazing science question you want answered? Leave a comment below! Produced for PBS Digital Studios Joe Hanson - Host Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Elizabeth Case - Writer Katie Graham - Director of Photography Andrew Matthews - Editing/Motion Graphics Dalton Allen - Post-production intern John Knudsen - Gaffer Theme music: "Ouroboros" by Kevin MacLeod Stock images via Shutterstock ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 10 min

    Can You Crush a Human Using the Atmosphere?

    Try Audible for 30 days visit https://www.audible.com/ok or text ok to 500 500! SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Uploaded 02-04-19 Air. I bet you never even notice that it’s there. Yet you are swimming in an ocean of it every day. If there’s a literal ton of air pressing down on you all the time, so why don’t we feel it? We look back at the history of physics to learn how we figured out air pressure, why vacuums don’t suck, and how people like Galileo, Torricelli, and Otto von Guericke changed science forever with a few simple experiments. #AirPressure #Physics #Atmosphere DISCLAIMER: Do not perform the trash bag experiment without adult supervision. Always have a helper nearby so you don’t get trapped in the bag. And never ever put your head inside a trash bag, ever. Here’s how to try it yourself: https://exploratorium.edu/snacks/feeling-pressured ----------- REFERENCES: Walker, Gabrielle. An Ocean of Air: Why the Wind Blows and Other Mysteries of the Atmosphere. Houghton Mifflin Harcourt, 2008. ----------- FOLLOW US for more curiosity: Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook http://www.facebook.com/itsokaytobesmart Books from our episodes: http://smart-books.tumblr.com/ Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 13 min

    The History of Money (From Barter To Bitcoin)

    PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Uploaded 29-09-19 Thanks to IBM Z for supporting PBS. To learn more about the annual student contest, go to https://ibm.co/2nVdMtD . To learn more about IBM Z go to https://ibm.co/2nVagPR Check out or friends from Two Cents for more great videos about money and finance! https://www.youtube.com/channel/UCL8w_A8p8P1HWI3k6PR5Z6w Money. We all use it. But is it real? I mean, you can touch a coin or bill, but who decided that’s worth anything? And what about all those 1’s and 0’s getting swapped and traded by computers thousands of times per second? How are those worth anything? We trace the history of money, from physical barter to bitcoin, and discover that money isn’t just a lie we all agree to share, it’s been built on the back of technology and invention for millennia. References: https://sites.google.com/view/invention-of-money-references/home Special thanks to our Brain Trust Patrons: AlecZero Bob Rosset Brent M. Diego Lombeida ----------- Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 10 min

    How a Planet-Sized Telescope Took the First Picture of a Black Hole | STELLAR

    PBS Member Stations rely on viewers like you. To support your local station, go to: http://to.pbs.org/DonateOKAY ↓ More info and sources below ↓ Uploaded 03-07-19 Thank you to Draper and its Hack the Moon initiative for supporting PBS Digital Studios | Learn more at https://wehackthemoon.com It took about a century for black holes to go from impossible, to theoretical, to real. And it was just this year, in 2019, when we finally saw the first picture of a black hole! But how to you take a photo of something so massively dense that not even light can escape its gravitational pull? You use a telescope the size of the Earth! This video is a bit different from most It's Okay To Be Smart videos. It's part of a new PBS miniseries called STELLAR, done in collaboration with Matt O’Dowd from PBS Space Time and Dianna Cowern from Physics Girl. Over six episodes we travel to telescopes, go inside space research centers, and chat with amazing scientists to bring you the most exciting stories about space. Next up is Matt's episode where he tells you how we discovered galaxies outside of our own. And if you missed it, check out: **Matt O’Dowd exploring the oldest quasar ever seen at the Gemini Telescope: https://www.youtube.com/watch?v=cqCPnXHKO5c **Physics Girl visits LIGO to learn about gravitational waves: https://www.youtube.com/watch?v=jtp71NT0GNg You'll be able to see future episodes on the Physics Girl, Space Time and It’s Okay to be Smart YouTube channels, as well as the PBS Digital Studios Facebook page. Stellar is a part of the PBS Summer of Space. They'll be lots of awesome space related content all summer long on PBS. See what's happening at https://www.pbs.org/summer-of-space/ #SummerOfSpacePBS #astrophysics #space Hosted by Joe Hanson Written by: Sophia Chen, Joe Hanson, Andrew Kornhaber, Eric Brown Directed by: Eric Brown and Andrew Kornhaber Producer: Randa Eid Director of Photography: Eric Brouse Sound: Tobi Nova Production Assistant: Anna Bosketti Editing: Pavel Ezrohi Graphics: Murilo Lopes Assistant Editing: Daniel Sircar Produced By: Kornhaber Brown Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 10 min

    Where Do Teeth Come From?

    So… baby teeth are pretty terrifying, huh? Remember to brush, floss, and SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓↓↓ More info and sources below ↓↓↓ Uploaded 09-10-18 Teeth. We’ve all got ‘em (most of us, anyway). But how do they grow? Teeth are made from some biological nanotechnology that will blow your mind. They are strong enough to last hundreds of millions of years. Oh, and if you’ve ever wondered how adult teeth replace your baby teeth, get ready to see something terrifying. Special thanks to Matthew Brown, Ph.D. and the University of Texas Vertebrate Paleontology Collection Watch the tasty new series “Tacos of Texas” https://www.youtube.com/channel/UCdzQ_ilHPH3rQtgzo4nKM_g REFERENCES: Dr. Gareth J. Fraser, Department of Biology, University of Florida Dr. Andrew Gillis, Department of Zoology, University of Cambridge S.J. AlQahtani Et al. (2010) Brief Communication: The London Atlas of Human Tooth Development and Eruption. AMERICAN JOURNAL OF PHYSICAL ANTHROPOLOGY 142:481–490 Teruel Jde D Et al. (2015) Comparison of chemical composition of enamel and dentine in human, bovine, porcine and bovine teeth. Archives of Oral Biology Volume 60, Issue 5 768-775 Hill, M.A. (2018) Embryology Timeline human development. https://embryology.med.unsw.edu.au/embryology/index.php/Timeline_human_development ----------- FOLLOW US: Twitter: @DrJoeHanson @okaytobesmart Instagram: @DrJoeHanson Merch: https://store.dftba.com/collections/its-okay-to-be-smart Facebook: http://www.facebook.com/itsokaytobesmart SEND US STUFF: It’s Okay To Be Smart PO Box 303356 Austin, TX 78703 USA BOOKS WE’VE FEATURED: http://smart-books.tumblr.com/ ----------- It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D. Director: Joe Nicolosi Writer: Sarah Keartes Creative Director: David Schulte Editor/animator: Mark Rodriguez Producers: Stephanie Noone and Amanda Fox Produced by PBS Digital Studios Music via APM Stock images from Shutterstock http://www.shutterstock.com Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 28 min

    You've Been Lied to About DNA Evidence

    Thank you to Squarespace for supporting PBS. Go to https://www.squarespace.com/besmart for a free trial and use code BESMART to save 10% off your first purchase of a website or domain. ↓↓↓ More info and sources below ↓↓↓ Uploaded 31-03-26 Follow me to Deep Look and celebrate Earth Month with PBS: https://www.youtube.com/watch?v=fbuJSmpxiNY PBS Earth Month Playlist: https://www.youtube.com/playlist?list=PLnNZYWyBGJ1F8ofFm4H9UTrHxqU8zngK4 DNA evidence is supposed to be the gold standard of criminal investigation. But what happens when that same technology sends innocent people to prison? Featuring interviews with Amanda Knox and forensic DNA expert Dr. Greg Hampikian, this is my investigation of DNA forensics, and what happens when we trust the science but don't ask the right questions. References: https://sites.google.com/view/besmart-forensic-dna/home 0:00 "I'm being framed." 1:28 DNA is supposed to be magic 2:40 The serial killer who never existed 7:02 How forensic DNA actually works 11:41 His DNA was at the crime scene. He wasn't. 14:37 What happened to Amanda Knox 20:02 The DNA never lied. Or did it? Be Smart explores science questions you didn’t even know you wondered about. It is hosted and produced by Joe Hanson, PhD. We post new videos all the time, so please subscribe! If you enjoyed this video, hit the ‘like’ button, leave a comment, or watch another of our videos! CONNECT WITH ME ____________________________________ Website: https://www.itsokaytobesmart.com/ Instagram: https://www.instagram.com/okaytobesmart/ https://www.instagram.com/drjoehanson/ Facebook: https://www.facebook.com/itsokaytobesmart Patreon: https://www.patreon.com/c/itsokaytobesmart A big thanks to our Brain Trust patrons: Baerbel Winkler, Brent Lopez, dani bowman, David Johnston, Ed Eyden, Eric Meer, Greg Olson, Holly, Brett, and Ashe Bullion, Jaap Westera, Karen Haskell, Marcus Pingel, Mike and Patty Loftis, Paul Weir, Reuben Brewer SPONSORSHIP INQUIRIES ____________________________________ Please email biz@itsokaytobesmart.com Stock video and images provided by Shutterstock, Artlist, and MotionArray Music provided by APM Written by Molly Edwards and Joe Hanson Edited by Ben Harrison Produced by Least Square Media and Spotzen for PBS Digital Studios Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 6 min

    Why Does February Have Just 28 Days?

    Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate It's not the size of the month that matters… Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Why does February have 28 days when all the other months get 30 or 31? The answer is part superstition, part politics, and parts astronomy. (Basically, it's the Romans' fault) Special thanks to Dr. Jen Ebbeler from the University of Texas Classics department for walking me through the history of the Roman calendar REFERENCES AND FURTHER READING: Wikipedia's "Roman Calendar" page is really good http://en.wikipedia.org/wiki/Roman_calendar More: http://penelope.uchicago.edu/Thayer/E/Roman/Texts/secondary/SMIGRA*/Calendarium.html http://penelope.uchicago.edu/~grout/encyclopaedia_romana/calendar/romancalendar.html http://penelope.uchicago.edu/~grout/encyclopaedia_romana/calendar/intercalation.html Have an idea for an episode or an amazing science question you want answered? Leave a comment below! Follow on Twitter: http://twitter.com/okaytobesmart http://twitter.com/jtotheizzoe Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: http://instagram.com/jtotheizzoe ----------------- It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.DFollow me on Twitter: @jtotheizzoe Email me: itsokaytobesmart AT gmail DOT com Facebook: http://www.facebook.com/itsokaytobesmart Google+ https://plus.google.com/+itsokaytobesmart For more awesome science, check out: http://www.itsokaytobesmart.com Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios Joe Hanson - Creator/Host/Writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Director of Photography John Knudsen - Gaffer Dalton Allen - Post-Production Intern Theme music: "Ouroboros" by Kevin MacLeod Other music via APM Stock images from Shutterstock ----------------- Last week's video: Why Vaccines Work https://www.youtube.com/watch?v=3aNhzLUL2ys More videos: Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA Where Does the Smell of Rain Come From? https://www.youtube.com/watch?v=lGcE5x8s0B8 Why Did We Blow on NES Games? https://www.youtube.com/watch?v=4Gf9mtXnJfM The Science of Game of Thrones - https://www.youtube.com/watch?v=Utu-LpJn3Is There Was No First Human - https://www.youtube.com/watch?v=xdWLhXi24Mo​ Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 20 min

    Why Dung Beetles Stare At the Stars | IN OUR NATURE

    “In Our Nature” is a NEW special limited series on It’s Okay To Be Smart! We’re on PATREON! Join the community ►► https://www.patreon.com/itsokaytobesmart ↓↓↓ More info and sources below ↓↓↓ Uploaded 01-09-21 Seemingly distant ecosystems, even half a world apart, are connected in surprising ways. In this special limited series, Emily Graslie and Trace Dominguez join me as we explore the universal rules of life that tie together Earth’s living systems. In episode 5, we meet some interesting bugs that use truly extreme senses to navigate their world. How do dung beetles use astronomy to roll their poo balls home? And what does a swarm of beetles descending on a packed football stadium have to do with forest fires? Welcome to the world of extreme animal senses. References: https://sites.google.com/view/inournature5-references/home In Our Nature is a special miniseries produced by It’s Okay To Be Smart for PBS. Stay tuned for more episodes coming this summer, here on our YouTube channel! Original Production Funding provided by: Anne Ray Foundation, a Margaret A. Cargill Philanthropy ----------- Special thanks to our Brain Trust Patrons: Clinger-Hamilton Family Attila Pix Burt Humburg DeliciousKashmiri Mario Orso Brian Chang Roy Lasris Javier Soto dani bowman David Johnston Salih Arslan Baerbel Winkler Robert Young Amy Sowada Eric Meer Dustin Marcus Tuepker Karen Haskell AlecZero SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch https://store.dftba.com/collections/its-okay-to-be-smart Facebook https://www.facebook.com/itsokaytobesmartpbs/ Learn more about your ad choices. Visit megaphone.fm/adchoices Learn more about your ad choices. Visit megaphone.fm/adchoices

  • Sunday · 7 min

    What Makes Luck?

    Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate Do you feel lucky? SUBSCRIBE! ►► http://bit.ly/iotbs_sub ↓ More info and sources below ↓ Is luck real? It might feel like a mystical force tugging us toward good or bad fortune, but it turns out luck is really where probability runs into the human mind. That’s right, there’s a scientific side to luck, and if you study a few principles of math and psychology, you might even be able to create your own good fortune. ----------- LEARN MORE: “The Luck Factor” - Richard Wiseman http://www.worldcat.org/oclc/440674912 “What the Luck?” - Gary Smith http://amzn.to/2mQJvau Sports Illustrated cover jinx study: http://bit.ly/cover-jinx ----------- FOLLOW US: Merch: https://store.dftba.com/collections/its-okay-to-be-smart Facebook: http://www.facebook.com/itsokaytobesmart Twitter: @okaytobesmart @DrJoeHanson Tumblr: http://www.itsokaytobesmart.com Instagram: @DrJoeHanson Snapchat: YoDrJoe ----------- It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D. Director: Joe Nicolosi Writer: Joe Hanson Editor/animator: Andrew Orsak Producer: Stephanie Noone and Amanda Fox Produced by PBS Digital Studios Music via APM Stock images from Shutterstock http://www.shutterstock.com Learn more about your ad choices. Visit megaphone.fm/adchoices

Showing 41–60 of 369 episodes