Why Contacting Extraterrestrials Could Be Risky (Dark Forest Hypothesis)

How Thomas Jefferson Delivered America With a Dead Moose

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate E pluribus moose-um Subscribe: http://bit.ly/iotbs_sub Twitter: @jtotheizzoe @okaytobesmart ↓ More info and sources below ↓ America's first great science battle wasn't the space race or the atom bomb, it was fought between Thomas Jefferson, a French nobleman, and in the middle… a giant moose. Some people call Jefferson our only scientist-President, and T.J. himself said that "Nature intended me for the tranquil pursuits of science, by rendering them my supreme delight." Here's the story of how Jefferson used science to help a young nation make its mark Check out the book "Mr. Jefferson and the Giant Moose" by Lee Dugatkin!!! http://amzn.to/1RMFScF 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! Follow on Twitter: @DrJoeHanson @okaytobesmart Follow on Tumblr: http://www.itsokaytobesmart.com Follow on Instagram: @DrJoeHanson @okaytobesmart ----------------- It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.D 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 - Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Director of Photography John Knudsen - Gaffer Theme music: "Ouroboros" by Kevin MacLeod Other music via APM Stock images from Shutterstock, stock footage from Videoblocks Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

CHAOS: Why It's So Hard To Foresee the Weather

Why is the weatherperson wrong? Support us on Patreon https://www.patreon.com/itsokaytobesmart ↓ More info and sources below ↓ What is El Niño? Why can’t we predict the weather? Just a few slight changes in global climate patterns can drastically shift the weather. Thanks to chaos theory, even our smartest meteorologists can’t predict weather correctly. Cool demonstration of the Butterfly Effect: http://www.exploratorium.edu/complexity/java/lorenz.html 2:20 El Niño graph by Jan Null: http://ggweather.com/enso/oni.htm 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! 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.D. Follow me on Twitter: @DrJoeHanson 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 - Producer Andrew Matthews - Editing/Motion Graphics/Animation Katie Graham - Camera John Knudsen - Gaffer Theme music: “Ouroboros” by Kevin MacLeod Other music via APM Stock images from Shutterstock, stock footage from Videoblocks (unless otherwise noted) Learn more about your ad choices. Visit megaphone.fm/adchoices [https://megaphone.fm/adchoices]

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 [https://megaphone.fm/adchoices]

Why NASA Rammed an Asteroid

↓↓↓ More info and sources below ↓↓↓ Where did life come from? It’s one of the biggest questions humans have ever asked — and the answer might be locked in ancient space rocks that were around before life began. To find out, NASA pulled off one of its most ambitious missions ever, landing on an asteroid and sending a rock sample back to Earth. Today, we’re going to take a look at what it brought back. Join our Patreon community: https://www.patreon.com/itsokaytobesmart References: https://www.asminternational.org/early-analysis-of-nasas-first-asteroid-return-sample/ https://arxiv.org/abs/2308.11794 https://www.lpl.arizona.edu/news/spotlight/first-look-bennu-sample-reveals-carbon-and-water https://www.nature.com/articles/d41586-023-03178-0 https://www.nature.com/articles/d41586-023-03978-4 https://science.nasa.gov/wp-content/uploads/2023/09/osirisrexpresskit-2023.pdf ----------- 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 [https://megaphone.fm/adchoices]

How Much Plastic Pollutes the Ocean?

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate What can you do to make the oceans plastic-free? (HINT: Hitting the subscribe button uses zero plastic) ↓↓↓Check the resources below ↓↓↓ Ocean plastic pollution is a massive environmental problem. Millions of tons of plastic waste enter the ocean every year, even plastic that goes in the trash can often ends up in the sea! This week we learn about the Great Pacific Garbage Patch and look at the dangers ocean plastic poses to ocean animals. Plus, a few tips for you to reduce your own plastic use! Plastic Oceans Foundation: http://www.plasticoceans.org/ United Nations “Clean Seas” program: http://www.cleanseas.org/ The 5 Gyres Institute: https://www.5gyres.org/ Lonely Whale Foundation: https://www.lonelywhale.org/ Take this quiz to learn about your plastic impact: https://www.nytimes.com/interactive/2016/science/bottled-water-or-tap.html 10 ways to reduce plastic pollution: https://www.nrdc.org/stories/10-ways-reduce-plastic-pollution The no plastic straw pledge: http://www.plasticpollutioncoalition.org/no-straw-please/ Ocean plastic pollution resources from Monterey Bay Aquarium: https://www.montereybayaquarium.org/conservation-and-science/our-priorities/ocean-plastic-pollution What will it take to get plastic out of the ocean? https://ensia.com/features/what-will-it-take-to-get-plastics-out-of-the-ocean/ Resources for teachers: https://www.montereybayaquarium.org/education/teacher-professional-development/ocean-plastic-pollution-summit ----------- REFERENCES: Cózar, Andrés, et al. "Plastic debris in the open ocean." Proceedings of the National Academy of Sciences 111.28 (2014): 10239-10244. Jamieson, Alan J., et al. "Bioaccumulation of persistent organic pollutants in the deepest ocean fauna." Nature Ecology & Evolution 1 (2017): 0051. Jambeck, Jenna R., et al. "Plastic waste inputs from land into the ocean." Science 347.6223 (2015): 768-771. “Moby-Duck” by Donovan Hohn (Harper’s Magazine) http://harpers.org/archive/2007/01/moby-duck/?single=1 ----------- 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 Producer/editor/animator: Andrew Matthews 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 [https://megaphone.fm/adchoices]