Be Smart.

%$?# Allergies!

6 min · 26. touko 2026
jakson %$?# Allergies! kansikuva

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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate It's the season for sneezin'! Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart ↓ More info and sources below ↓ Springtime means the arrival of green grass, bright flowers, and buzzing bees. But for many of us, it's also about sneezing, watery red eyes, and a runny nose, thanks to allergies. In this week's video, you'll learn why we get allergies, how our immune system turns against us to attack pollen and pets, and why allergies seem to be on the rise in developed nations. Hygiene hypothesis: http://en.wikipedia.org/wiki/Hygiene_hypothesis Spread of allergies in developed nations: http://www.nature.com/nature/journal/v479/n7374_supp/full/479S2a.html TGF-beta and allergies: http://bit.ly/1HXjm05 Microbiome and allergies: http://www.bbc.com/news/health-28934415 Gut microbes and peanut allergy in mice: http://news.sciencemag.org/biology/2014/08/gut-microbe-stops-food-allergies 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: How Many Stars Are There? https://www.youtube.com/watch?v=vh8-ZUIX_1o 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 [https://megaphone.fm/adchoices]

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193 jaksot

jakson Are the Nobel Prizes Still Meaningful in the 21st Century? kansikuva

Are the Nobel Prizes Still Meaningful in the 21st Century?

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 ↓ The Nobel Prizes reward the greatest accomplishments of the human race. Right? Then why haven't they changed much in 100+ years? Do they really represent how science is done? And why so few women? References and more: Molly Oldfield - The Secret Museum http://amzn.to/173lLpj Georgia Lupi Nobel Prize infographic: http://www.brainpickings.org/index.php/2012/11/29/giorgia-lupi-noble-prizes-visualization/ Alfred Nobel's will: http://www.nobelprize.org/alfred_nobel/will/will-full.html Top 10 Nobel snubs: http://www.scientificamerican.com/slideshow.cfm?id=10-nobel-snubs Nobel Prize controversies (like Johannes Fibiger) http://en.wikipedia.org/wiki/Nobel_Prize_controversies Women who have won science Nobels http://mentalfloss.com/article/53186/14-women-whove-won-science-nobel-prizes-marie-curie The Nobel ignores how modern science works: http://spectrum.ieee.org/tech-talk/aerospace/astrophysics/nobel-for-higgs-boson-discovery-ignores-how-modern-science-works Nobel prize and myth of the "lone genius" http://blogs.scientificamerican.com/the-curious-wavefunction/2013/10/08/nobel-complexity/ Thomas Edison on success: http://www.brainpickings.org/index.php/2013/02/11/thomas-edison-on-sleep-and-success/ Steve Jobs on creativity: http://www.wired.com/wired/archive/4.02/jobs_pr.html Open letter to Nobel committee: http://www.newscientist.com/article/dn17863-open-letter-to-the-nobel-prize-committee.html#.Ul8DHWT5n6Q Thumbnail art via catwalker/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 [https://megaphone.fm/adchoices]

6. kesÀ 202610 min
jakson Why Do We Cook? kansikuva

Why Do We Cook?

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 ↓ Your brain is hungry. Here's how to feed it. SUBSCRIBE, it's FREE! http://bit.ly/iotbs_sub Ever wonder why we cook our food? We do it because it tastes good, of course, and because our customs and traditions are built around it. But we also cook our food for some basic biological reasons, because of evolution. Some scientists think that figuring out how to cook actually MADE us human! If conversation gets a little dry around your holiday table, now you'll have some awesome science to share with everyone! Richard Wrangham - "Catching Fire: How Cooking Made Us Human" http://amzn.to/1cg5flN "The Raw and the Stolen" (PDF) - Richard Wrangham et al. http://bit.ly/JTLYfe (that one has some of the counterarguments, too) Greg Laden's summary: http://bit.ly/1dx46oc Cooked Foods Needed for Early Human Brain: http://bit.ly/1l8bqJE Man Entered the Kitchen 1.9 Million Years Ago: http://bit.ly/1c1vcB5 What made us human: http://bit.ly/19lp4cU and http://www.epjournal.net/wp-content/uploads/EP08340342.pdf The story might not be quite so simple, though: http://blogs.plos.org/neuroanthropology/2010/10/28/food-for-thought-cooking-in-human-evolution/ Joe Hanson - Host Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKatie Graham - Director of Photography John Knudsen - Gaffer Isaac Hammons - Audio Recordist Stephen Bohls, Editor, Kino-Eye POST Christopher Chiles, Motion Graphics Kate Eads - Production Manager Intro music - Victor Herbert Orchestra, "Chinese Dance of the Mirillitons from the Nutcracker 1913" Body music - Podington Bear's "AlgoRhythmNatural" Special thanks to Thinkery Austin Produced for PBS Digital Studios ----------- 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 [https://megaphone.fm/adchoices]

6. kesÀ 20267 min
jakson The Universe in a Chalice of Wine (Richard Feynman Remixed) kansikuva

The Universe in a Chalice of Wine (Richard Feynman Remixed)

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 ↓ A poet once said, "The whole universe is in a glass of wine." We will probably never know in what sense he said that, for poets do not write to be understood. But it is true that if we look in glass of wine closely enough we see the entire universe There are the things of physics: the twisting liquid which evaporates depending on the wind and weather, the reflections in the glass, and our imagination adds the atoms. The glass is a distillation of the earth's rocks, and in its composition we see the secrets of the universe's age, and the evolution of the stars. What strange array of chemicals are in the wine? How did they come to be? There are the ferments, the enzymes, the substrates, and the products. There in wine is found the great generalization: all life is fermentation. Nobody can discover the chemistry of wine without discovering the cause of much disease. How vivid is the claret, pressing its existence into the consciousness that watches it! If in our small minds, for some convenience, divide this glass of wine, this universe, into parts - physics, biology, geology, astronomy, psychology, and so on - remember that nature does not know it! So let us put it all back together, not forgetting ultimately what it is for. Let us give one more final pleasure: drink it and forget it all! Get Feynman's Lectures on Physics in book form: http://bit.ly/OKfeynman "The Universe in a Glass of Wine" ... a poem by Richard Feynman, as delivered in the Feynman Lectures on physics. Watch them all here: http://io9.com/watch-a-series-of-seven-brilliant-lectures-by-richard-f-5894600 Clips used in this video: http://bit.ly/1ckkLsz Joe Hanson - Host Joe Nicolosi - Director Amanda Fox - Producer, Spotzen Inc Katie Graham - Director of Photography Bryan Poyser - Editor Sound Design - Lyman Hardy, Stuck On On Produced for PBS Digital Studios ----------- 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 [https://megaphone.fm/adchoices]

6. kesÀ 20263 min
jakson A Slice of Pizza Knowledge! kansikuva

A Slice of Pizza Knowledge!

How does math keep a folded slice from drooping? And what does pizza have to do with the speed of light? Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate How a 19th Century Math Genius Taught Us the Best Way to Hold a Pizza Slice: http://www.wired.com/2014/09/curvature-and-strength-empzeal/ Planet Money pizza price comparison: http://www.npr.org/blogs/money/2014/02/26/282132576/74-476-reasons-you-should-always-get-the-bigger-pizza Measure the speed of light with your microwave: http://io9.com/5526055/use-your-microwave-to-measure-the-speed-of-light Produced for PBS Digital Studios Joe Hanson - Host, writer, editing, graphics Amanda Fox - Producer, Spotzen Inc Kate Eads - Associate Producer John Knudsen - Gaffer, Camera 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 [https://megaphone.fm/adchoices]

Eilen4 min
jakson The Science of Snow Geometry kansikuva

The Science of Snow Geometry

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 are a beautiful and curious snowflake. SUBSCRIBE, it's FREE! http://bit.ly/iotbs_sub Snowflakes are infinitely beautiful, but are they infinitely unique? Here's all the science behind Earth's favorite cold crystal. More reading: Wilson Bentley, The Snowflake Man of Vermont http://publicdomainreview.org/2011/02/14/the-snowflake-man-of-vermont/ Kenneth Libbrecht's SnowCrystals website (the definitive snow science page on the internet): http://www.its.caltech.edu/~atomic/snowcrystals/ The true shape of snowflakes: http://news.sciencemag.org/environment/2013/04/scienceshot-true-shape-snowflakes?rss=1 Timeline of snowflake research: http://en.wikipedia.org/wiki/Timeline_of_snowflake_research Interactive water crystal packing (Firefox is best) http://www.edinformatics.com/interactive_molecules/ice.htm The case of two identical snowflakes: http://www.livescience.com/1239-scientist-snowflakes-alike.html Joe Hanson - Host and writer Joe Nicolosi - Director Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer Katie Graham - Director of Photography Andrew Matthews - Editor and motion graphics Produced for PBS Digital Studios ----------- 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 [https://megaphone.fm/adchoices]

Eilen7 min