সেরা ভিডিও
Another YouTube #shorts from Dr. Joe! Subscribe for more fun science stories.
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Humans have a hard time with really big numbers, especially when it comes to DEEP TIME. The history of the Earth took a lot longer than you think, trust me. But I’m here to help you put it in perspective. With some string.
REFERENCES:
http://bit.ly/DeepTimeRefs
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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
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-We’d like to thank these folks-
Special thanks to Dr. Lorna Gibson of MIT for her woodpecker biomechanics expertise
Three-dimensional reconstructions based on CT data courtesy of DigiMorph.org
Pileated woodpecker slo-mo footage courtesy of Dr. Robert Shadwick/University of British Columbia
-References/Learn More-
Daneshvar, Daniel H., et al. "The epidemiology of sport-related concussion." Clinics in sports medicine 30.1 (2011): 1-17.
Gibson, L. J. "Woodpecker pecking: how woodpeckers avoid brain injury." Journal of Zoology 270.3 (2006): 462-465.
Haldane, John BS. "On being the right size." Harper’s Magazine 152 (1926): 424-427.
Maroon, Joseph C., et al. "Chronic traumatic encephalopathy in contact sports: a systematic review of all reported pathological cases." PloS one 10.2 (2015): e0117338.
May, Philip RA, et al. "Woodpecker drilling behavior: an endorsement of the rotational theory of impact brain injury." Archives of Neurology 36.6 (1979): 370-373.
Schwab, Ivan R. "Cure for a headache." British Journal of Ophthalmology86.8 (2002): 843-843.
Wang, Lizhen, et al. "Why do woodpeckers resist head impact injury: a biomechanical investigation." PloS one 6.10 (2011): e26490.
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It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
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!
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How scientifically accurate is your favorite sci-fi space battle?
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Joseph Shoer has several extensive, in-depth articles on the physics of space warfare:
http://josephshoer.com/blog/20....09/12/thoughts-on-sp
http://josephshoer.com/blog/20....10/07/projecting-spa
Space warfare: Almost everything you know is probably wrong http://www.escapistmagazine.co....m/forums/read/18.100
Is space warfare really practical? http://www.escapistmagazine.co....m/forums/read/18.846
Zero-g dogfighting for dummies: http://www.citizenstarnews.com..../news/zero-g-dogfigh
Projectile weapons vs. directed energy weapons: http://forum.gateworld.net/thr....eads/17263-Projectil
Nukes in space: http://www.projectrho.com/publ....ic_html/rocket/space
Effects of radiation weapons in space: http://www.projectrho.com/publ....ic_html/rocket/radia
Could the Death Star really destroy a planet? http://www.universetoday.com/9....2746/could-a-death-s
"Sir Isaac Newton is the deadliest son of a b***h in space" https://www.youtube.com/watch?v=hLpgxry542M
Produced for PBS Digital Studios
Joe Hanson - Host and writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Katie Graham - Director of Photography
Editing/Motion Graphics - Andrew Matthews/Kirby Conn
Gaffers - John Knudsen/Philip Sheldon
Post-production intern - Dalton Allen
Theme music:
"Ouroboros" by Kevin MacLeod
Stock images via Shutterstock
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Is beer the perfect beverage? Let's see what science says...
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Big thank you to Jester King Brewery in Austin, TX: http://jesterkingbrewery.com/
The chemistry of beer flavors: http://www.compoundchem.com/20....14/07/10/beerchemica
Uncorking the past, a history of alcoholic beverages: http://www.economist.com/node/883706
Domestication of grain in near east: http://www.nature.com/nrg/jour....nal/v3/n6/abs/nrg817
Alcohol and social complexity in ancient western Asia: http://alexanderjoffe.net/alcohol.pdf
Finally, a weird Dutch Heineken ad from the 1950's about sending beer to the moon: https://www.youtube.com/watch?v=I03AxY5gA8I
Joe Hanson - Host and writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Katie Graham - Director of Photography
Editing/Motion Graphics - Andrew Matthews
Gaffer - John Knudsen
Post-production intern - Dalton Allen
Theme music:
"Ouroboros" by Kevin MacLeod
Stock images via Shutterstock
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Follow me to Gross Science: https://youtu.be/kRUt9pqMCSg and BrainCraft: https://youtu.be/Joalg73L_gw
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BOOK RECOMMENDATION: Barbara J. King "How Animals Grieve" http://amzn.to/1MD7Jz5
References:
Barbara J. King “When Animals Mourn” Scientific American http://www.nature.com/scientif....icamerican/journal/v
Jason G. Goldman “Death Rituals In The Animal Kingdom” http://www.bbc.com/future/stor....y/20120919-respect-t
Iain Douglas Hamilton “Behavioural reactions of elephants towards a dying and deceased matriarch” Applied Animal Behavior Science http://www.appliedanimalbehavi....our.com/article/S016
Chimpanzees mourning dead infants:
http://www.mpg.de/1071360/mourning_chimpanzee
http://www.cell.com/current-bi....ology/abstract/S0960
(video: https://www.youtube.com/watch?v=nM9GLhuPDXA)
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!
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It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
Follow me on Twitter: @jtotheizzoe
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)
You can learn more at https://curiositystream.com/smart
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Have you ever noticed that warning about raw or undercooked seafood at the bottom of restaurant menus? Ever wondered why it’s there? Because fish carry a ton of parasites, and if they aren’t prepared correctly then those parasites can make it into your body. But it turns out, this fishy intersection with the wild world of parasites can teach us a lot about how these moochers help keep ecosystems healthy, and why we should protect them.
REFERENCES:
Parasite Evolution https://www.livescience.com/55483-wei...
The World’s Parasites Are Going Extinct. Here’s Why That’s a Bad Thing https://www.smithsonianmag.com/scienc...
History of Human Parisitology https://www.ncbi.nlm.nih.gov/pmc/arti...
Parasites in Seattle Sushi http://agris.fao.org/agris-search/sea...
Dramatic evolution within human genome may have been caused by malaria parasite http://www.sciencemag.org/news/2017/0...
Parasite Rex by Carl Zimmer https://www.amazon.com/Parasite-Rex-B...
Interviews and conversations with:
Colin J. Carlson (National Socio-Environmental Synthesis Center)
Chelsea L. Wood (University of Washington)
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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
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A brief history of time…
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How did we come up with our system of telling time? Why do we divide the day into 24 hours of 60 minutes each, and put 60 seconds in each minute? Where does the definition of a second come from? And who decides what clock shows the correct time? There’s clearly a lot of questions when it comes to time.
READ MORE:
“Galileo’s Pendulum” - Roger Newton http://amzn.to/2yQri5E
“Revolution in Time” - David Landes http://www.worldcat.org/oclc/890167780
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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Matt Caplan, Ph.D. and Joe Hanson, Ph.D.
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Explore the DESI universe map here: https://newscenter.lbl.gov/202....4/04/04/desi-first-r
Another YouTube #shorts from Dr. Joe! Subscribe for more fun science stories.
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Here's why you aren't built like a lobster.
Our bodies are mirror images of lobsters and other arthropods from back to belly. We've know since the early 19th century that our guts and nervous systems are inverted from theirs, but only recently has molecular biology shown us why. Here's the evolutionary tale about a worm doing the backstroke and why your guts are on your front.
This is part 2 of 3 in my series about how our bodies evolved to look like they do. Check out the others:
Part 1 - https://www.youtube.com/watch?v=qdNE4WygyAk
Part 3 - Coming Friday!
More info:
Dorsoventral inversion: http://en.wikipedia.org/wiki/I....nversion_(evolutiona
Geoffrey Saint-Hilaire: http://en.wikipedia.org/wiki/%....C3%89tienne_Geoffroy
Common animal body plan between protostomes and deuterostomes: http://www.hhmi.ucla.edu/derob....ertis/EDR_MS/Evo-Dev
How we know that our body plan came later: http://scienceblogs.com/pharyn....gula/2006/01/12/hemi
Step by step along the evolutionary tree:
http://tolweb.org/Bilateria/2459
http://en.wikipedia.org/wiki/Bilateria
http://en.wikipedia.org/wiki/Deuterostome
http://en.wikipedia.org/wiki/Protostome
http://en.wikipedia.org/wiki/Urochordata
http://en.wikipedia.org/wiki/Chordate
http://en.wikipedia.org/wiki/Cephalochordata
http://en.wikipedia.org/wiki/Craniate
http://en.wikipedia.org/wiki/Gnathostomata
Evolutionary timeline of vertebrates: http://www.utexas.edu/news/2008/03/03/tree/
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
John Knudsen - Gaffer
Music:
"Ouroboros" by Kevin MacLeod
Stock images via Shutterstock
Produced by PBS Digital Studios: http://www.youtube.com/user/pbsdigitalstudios
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There’s a lot of confusion out there about what is and isn’t a dinosaur. And you’d be forgiven for being kinda confused. Maybe paleontologists are just messing with us. Or… maybe the question of what is and isn’t a dinosaur goes deeper than we think? Well, like an intrepid fossil hunter, I set out to dig up an answer, and what I found teaches us a lesson about how hard it is to build a picture of the past when you only have a few puzzle pieces and a lot about why we classify things the way we do.
"The Rise and Fall of the Dinosaurs" by Dr. Steve Brusatte https://amzn.to/2Nndyoj
"Scrotum Humanum" comes from Brookes, R. (Richard). (1763). A new and accurate system of natural history ... London: Printed for J. Newbery.
https://archive.org/details/ne....waccuratesyste05broo
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Behold the COSMOTRON 5000!!!
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How to build your own cloud chamber particle detector and test relativity at home: http://www.fromquarkstoquasars.....com/make-a-cosmic-r
Carl Sagan discusses cosmic radiation and the origin of life in "Cosmic Connection": http://amzn.to/1wiHIsu
Learn about muons, time dilation, and relativity: http://cosmic.lbl.gov/SKliewer..../Cosmic_Rays/Muons.h
Produced for PBS Digital Studios
Joe Hanson - Host and writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Katie Graham - Director of Photography
Andrew Matthews - Editing/Motion Graphics
John Knudsen - Gaffer
Dalton Allen - Post-production Intern
Theme music:
"Ouroboros" by Kevin MacLeod
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You know you’ve wondered. Do fish actually pee? And what does that make the ocean… one big toilet?
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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: Derek Borsheim and Sara Roma
Producers: Stephanie Noone and Amanda Fox
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Go to http://Raceforretirement.com and see how the action gap affects you.
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↓ More info and sources below ↓
CGP Grey "The Simple Solution to Traffic" https://youtu.be/iHzzSao6ypE
ASAPscience "How Not To Get Stuck In Traffic" https://youtu.be/APkpiO0QQ_k
Book recommendation! "Traffic: Why We Drive the Way We Do" by Tom Vanderbilt http://amzn.to/2durlGP
References:
INRIX 2015 traffic stats: http://inrix.com/scorecard/key-findings-us/
Couzin, Iain D., and Nigel R. Franks. "Self-organized lane formation and optimized traffic flow in army ants." Proceedings of the Royal Society of London B: Biological Sciences 270.1511 (2003): 139-146.
Fourcassié, Vincent, Audrey Dussutour, and Jean-Louis Deneubourg. "Ant traffic rules." Journal of Experimental Biology 213.14 (2010): 2357-2363.
Hönicke, C., P. Bliss, and R. F. A. Moritz. "Effect of density on traffic and velocity on trunk trails of Formica pratensis." The Science of Nature 102.3-4 (2015): 1-9.
Larson, Richard C. "There's More to a Line than its Wait." Technology Review 91.5 (1988): 60-67.
Maister, David H. The psychology of waiting lines. Harvard Business School, 1984.
Perna, Andrea, et al. "Individual rules for trail pattern formation in Argentine ants (Linepithema humile)." PLoS Comput Biol 8.7 (2012): e1002592.
----------------
It's Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
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!
Facebook: http://www.facebook.com/itsokaytobesmart
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It’s the Great American Read!
Vote for America's favorite novel: https://to.pbs.org/2Jes2X5
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English is a confusing language for many reasons. But the irregular verbs might be the most confusing part. Why is “told” the past tense of “tell” but “smold” isn’t the past tense of “smell”? It turns out that the study of irregular verbs can teach us a lot about how languages evolve. This week, we look at how the era of Big Data is unlocking secrets behind the weirdness of words.
OTHER VIDEOS TO CHECK OUT:
“The Zipf Mystery” - Vsauce https://youtu.be/fCn8zs912OE
“Trending Artists of the 17th Century” - The Art Assignment https://youtu.be/7eq3D9Q9lUA
REFERENCES:
Uncharted: Big Data as a Lens on Human Culture - Erez Aiden and Jean-Baptiste Michel https://amzn.to/2MLBEHF
Words and Rules - Steven Pinker https://amzn.to/2vKL1kf
Lieberman, Erez, et al. "Quantifying the evolutionary dynamics of language." Nature 449.7163 (2007): 713.
Michel, Jean-Baptiste, et al. "Quantitative analysis of culture using millions of digitized books." Science (2010): 1199644.
Hanley, M. L., Joos, M., & Fein, T. (1937). Word index to James Joyce's Ulysses. Madison: University of Wisconsin Press.
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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Writer: Joe Hanson
Creative Director/Director: David Schulte
Editor/animator: Derek Borsheim
Producers: Stephanie Noone and Amanda Fox
Produced by PBS Digital Studios
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If you traced your family tree back 185 million generations through evolution, you wouldn't be looking at a human, a primate, or even a mammal. You'd be looking at a fish. So where along that line does the first human show up? The answer may surprise you!
Inspired by Richard Dawkins' "The Magic of Reality" http://amzn.to/1eFPE0v
Also check out Richard Dawkins' "The Ancestor's Tale" http://amzn.to/1fbf17e
Images of prehistoric species used in this episode:
Tiktaalik, Procunsul, Plesiadapsis, Juramaia, Hylonomus - by Nobu Tamura (http://spinops.blogspot.com/)
Homo erectus (by Tim Evanson) http://bit.ly/1uwI5zu
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
John Knudsen - Gaffer
Music:
"Ouroboros" by Kevin MacLeod
Produced for PBS Digital Studios
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How does the placebo effect work? Here's how your brain tricks itself when it comes to medicine
Follow me to Reactions to learn what is (and isn’t) in those vitamin supplements: https://youtu.be/9gQoG0AT3kY
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References:
Niemi, M. B. (2009). Placebo Effect: A Cure in the Mind: Scientific American.Placebo Effect: A Cure in the Mind: Scientific American.
Price, D. D., Finniss, D. G., & Benedetti, F. (2008). A comprehensive review of the placebo effect: recent advances and current thought. Annu. Rev. Psychol.,59, 565-590.
Finniss, D. G., Kaptchuk, T. J., Miller, F., & Benedetti, F. (2010). Biological, clinical, and ethical advances of placebo effects. The Lancet, 375(9715), 686-695.
Marchant, J. (2015). Strong placebo response thwarts painkiller trials. Nature News http://www.nature.com/news/str....ong-placebo-response
Dr. Ben Goldacre's book "Bad Science" http://amzn.to/1TZ5WUE
Harold Pashler "Encyclopedia of the Mind" http://amzn.to/1HT7RJ4
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!
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It’s Okay To Be Smart is written and hosted by Joe Hanson, Ph.D.
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Joe Hanson - Creator/Host/Writer
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This video was supported by Bill and Melinda Gates. You can check out the Gates Annual Letter here: http://b-gat.es/2lhhtmJ.
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We’re proud to collaborate with Bill and Melinda Gates for this week’s video! It may sometimes seem like things are getting worse, but there’s lots of reasons to be optimistic about the future. More people have access to toilets and sanitation than ever before. Thanks to public health improvements like this, since 1990, 122 million children’s lives have been saved. Diseases like polio are nearing eradication. Women have more access to health care and education than ever before.
But our work is not done. How can YOU help make the future better for the world’s poorest?
SPECIAL THANKS:
Bill and Melinda Gates
Francisco de los Reyes (watch his TED talk: https://www.ted.com/talks/fran....cis_de_los_reyes_san
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LEARN MORE:
George, Rose. “The Big Necessity: The unmentionable world of human waste and why it matters.” 2008.
Perdew, Laura. “How the Toilet Changed History” 2016.
Ferriman, A. (2007). BMJ readers choose the “sanitary revolution” as greatest medical advance since 1840. BMJ : British Medical Journal, 334(7585), 111. http://doi.org/10.1136/bmj.39097.611806.DB
CDC Global WASH statistics: https://www.cdc.gov/healthywat....er/global/wash_stati
WHO Toilet/Sanitation Fact Sheet: http://www.who.int/mediacentre..../factsheets/fs392/en
WaterAid “We Can’t Wait”: http://www.wateraid.org/what-w....e-do/our-approach/re
Unilever “Toilets for Health” https://www.unilever.com/Image....s/sd_toilets-for-hea
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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
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You can be a human computer too. Our cheat sheet: http://bit.ly/2rftqkv
Want to go NEXT LEVEL? Learn how to adjust for Julian calendar and BC dates
You might think that computers are the only things that run algorithms, but you're wrong. Here's a neat mental trick for calculating the day of the week for any day ever, developed by famous mathematician John H. Conway
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READ MORE:
https://en.wikipedia.org/wiki/Doomsday_rule
Martin Gardner, "The Universe in a Handkerchief: Lewis Carroll's Mathematical Recreations, Games, Puzzles, and Word Plays"
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It's Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Joe Hanson, Ph.D.
Producer/editor/animator: Jordan Husmann
Producer: Stephanie Noone and Amanda Fox
Produced by PBS Digital Studios
Music via APM
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Hold on to your butts. This episode is about… butts. The science and evolutionary history of your rear end, the down-low on your derriere, shining a little light where the sun don't shine… you get the picture. But(t) seriously, we don't talk about this all-important hole enough, and how, from an evolutionary perspective, it might be the most important orifice on your body.
References: https://sites.google.com/view/....briefhistoryofbutts-
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