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Teacherflix
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I feel like I've seen this video before…
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Most of us have felt it before, that strange sensation that you've been somewhere or seen something before, as if you already remembered what's happening. Are you psychic? Nope, that's just déjà vu. Why does déjà vu happen? Well, scientists aren't completely sure, but they've got a few good theories about it.

Great déjà vu explainer from Jordan Gaines Lewis: http://www.gainesonbrains.com/....2012/02/seeing-into-

Some theories of why déjà vu happens: http://theconversation.com/exp....lainer-what-is-deja-

And now for something completely different: https://www.youtube.com/watch?v=G2eUopy9sd8

Special thanks to Austin's Corona Cafe!

Cast:
Waiter - Joe Nicolosi (he's also the director)
Sneezing girl - Kate Eads (she's also associate producer)
Guy spilling coffee - John Knudesn (he's also gaffer)

Have an idea for an episode or an amazing science question you want answered? Leave a comment below!

-----------------
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 for PBS Digital Studios

Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Associate Producer
Andrew Matthews - Editing/Motion Graphics
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:
5 Weird Involuntary Behaviors Explained: http://www.youtube.com/watch?v=ZE8sRMZ5BCA

More videos:
Why Are Some People Left-Handed? https://www.youtube.com/watch?v=NPvMUpcxPSA
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
How The Elements Got Their Names - https://www.youtube.com/watch?v=mtg9p6A6xnY

Teacherflix
0 المشاهدات · منذ 3 الشهور

The science of-- OH GOD IS THAT A SPIDER?!

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate

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I'm scared of spiders. I'm not afraid to admit it. I love them in a scientific sense, or from a "let me look at you from way over here" sense, but that's as close as I get.

Here's a look at the science of why some of us are afraid of spiders, snakes, roaches, and other creepy crawlies. Did I evolve to be this way, or did I learn to be afraid of them? It seems to be an open question…

How dangerous ARE spiders? http://burkemuseum.blogspot.co....m/2010/09/q-how-dang

Humans may have evolved to pick out spiders and snakes from environment: http://www.apa.org/news/press/....releases/2001/09/sna

The overlapping worlds of fear conditioning from innate fear: http://instruct.uwo.ca/psychol....ogy/371g/Ohman2001.p

Doctor Who study suggests that spider fear may not be innate: http://www.wired.com/2014/01/d....octor-who-and-spider

Most common phobias: http://psychology.about.com/od..../phobias/p/commonpho

Adults and kids pick out creepy animals quicker than non-creepy animals: http://www.livescience.com/2348-fear-snakes.html

Children report spiders as a top fear: http://www.sciencedirect.com/s....cience/article/pii/S

List of clips featured in this episode: http://bit.ly/1xFhdO9

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
Stephen Bohls - Editing/Motion Graphics
John Knudsen - Gaffer

Theme music: "Ouroboros" by Kevin MacLeod

Thumbnail photo: specnaz/Shutterstock

Stock images via Shutterstock

Music: "Two Boys and a Girl" - Podington Bear

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Teacherflix
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The biggest (and most mysterious!) migration in the world happens every night in the ocean as 10 billion tons of zooplankton swim to the surface to feed. This undersea journey is known as Diel vertical migration, and it occurs in every ocean in the world. By learning more about why this happens, science can unlock the secrets behind other phenomena, like our biological clocks…and even climate change.

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References: https://sites.google.com/view/....earths-greatest-migr

Check out Untold Earth and the PBS Earth Month Playlist: https://www.youtube.com/watch?v=-BVHSUMAWR4&list=PLzkQfVIJun2J5q9CIXPAlL95FSb0tJul7&index=2

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Teacherflix
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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate

Do you feel lucky?
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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.

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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

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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

Teacherflix
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Learn more about your personal DNA story by going to https://23andMe.com/okay
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What’s the largest river on Earth? If you said “the Amazon”… you’re only half right. Scientists have discovered an even bigger river in South America, and it’s in the sky above the Amazon rainforest. Turns out, this sky river is the reason there’s a rainforest at all…

REFERENCES:

Dr. Scot T. Martin, Gordon McKay Professor of Environmental Science and Engineering and Professor of Earth and Planetary Sciences, Harvard University.

Dr. Antonio Donato Nobre, National Institute for Space Research, Brazil. Centro de Ciência do Sistema Terrestre

TED Talk: “The Magic of the Amazon, a river that flows invisibly all around us.” https://www.youtube.com/watch?v=01jYiXbpnoE

“The Future Climate of Amazon.” Scientific Assessment Report. Articulación Regional Amazônica (2014). Sao Jose dos Campos – SP Edition ARA, CCST-INPE e INPA

Andreae et al. “Biogeochemical cycling of carbon, water, energy, trace gases, and aerosols in Amazonia: The LBA‐EUSTACH experiments.” Journal of Geophysical Research: Atmospheres (2002). https://doi.org/10.1029/2001JD000524

Dettinger, M. D., Ralph, F. M., Das, T., Neiman, P. J., & Cayan, D. R. (2011). Atmospheric rivers, floods and the water resources of California. Water, 3(2), 445-478.

Pöhlker, C., Wiedemann, K. T., Sinha, B., Shiraiwa, M., Gunthe, S. S., Smith, M., ... & Elbert, W. (2012). Biogenic potassium salt particles as seeds for secondary organic aerosol in the Amazon. Science, 337(6098), 1075-1078.
https://authors.library.caltec....h.edu/34067/2/Pohlke

Ter Steege, H., Pitman, N. C., Sabatier, D., Baraloto, C., Salomão, R. P., Guevara, J. E., ... & Monteagudo, A. (2013). Hyperdominance in the Amazonian tree flora. Science, 342(6156), 1243092.

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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: Sara Roma
Producers: Stephanie Noone and Amanda Fox

Produced by PBS Digital Studios
Music via APM
Stock images from Shutterstock http://www.shutterstock.com

Teacherflix
0 المشاهدات · منذ 3 الشهور

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate
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Try Squarespace: http://squarespace.com/itsokaytobesmart
You’d have to be nuts not to love this video!
Special thanks to Jason Goldman (@jgold85) for help with this episode!

References:
Jacobs, Lucia F., and Emily R. Liman. "Grey squirrels remember the locations of buried nuts." Animal Behaviour 41.1 (1991): 103-110.

Delgado, Mikel M., et al. "Fox squirrels match food assessment and cache effort to value and scarcity." PloS one 9.3 (2014): e92892.

Raby, Caroline R., et al. "Planning for the future by western scrub-jays."Nature 445.7130 (2007): 919-921.

Dally, Joanna M., Nathan J. Emery, and Nicola S. Clayton. "Food-caching western scrub-jays keep track of who was watching when." Science312.5780 (2006): 1662-1665.

Clayton, Nicola S., Joanna M. Dally, and Nathan J. Emery. "Social cognition by food-caching corvids. The western scrub-jay as a natural psychologist."Philosophical Transactions of the Royal Society of London B: Biological Sciences 362.1480 (2007): 507-522.

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/DrJoeHanson
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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/pbsdigita...

Music via APM
Stock images from Shutterstock, stock footage from Videoblocks (unless otherwise noted)

Teacherflix
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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-ge
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/biologis
Three-parent babies: http://www.nytimes.com/2014/06..../29/magazine/the-bra


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
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-----------------
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

Teacherflix
0 المشاهدات · منذ 3 الشهور

Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate

Follow me to Vsauce3!! http://bit.ly/1zUxn7a
Twitter: @okaytobesmart @jtotheizzoe Instagram: @jtotheizzoe
↓ More info and sources below ↓

Will artificial intelligence ever surpass human intelligence? And if that happens, will AI be good or bad? Is evil AI like we see in Avengers: Age of Ultron… inevitable?

READ THIS FOR MORE:
Wait But Why: The Road To Superintelligence
Part 1: http://waitbutwhy.com/2015/01/....artificial-intellige
Part 2: http://waitbutwhy.com/2015/01/....artificial-intellige

The smiley face thought experiment is my take on the famous "paperclip maximizer", read more about it here: http://wiki.lesswrong.com/wiki/Paperclip_maximizer

Special thanks to Jake from Vsauce3!

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
Dan Silver - Production Assistant
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:
Superbugs: The Empire Strikes Bacteria https://www.youtube.com/watch?v=fyRyZ1zKtyA

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

Teacherflix
0 المشاهدات · منذ 3 الشهور

Remove your personal information from the web at http://joindeleteme.com/BESMART and use code BESMART for 20% off
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Dire wolves are back—sort of. Colossal Biosciences seems to have resurrected this extinct predator, but it's not quite as simple as that. Joe talks with their scientists to explore the truth, tech, and ethics of “de-extinction.”

Learn more about Colossal Biosciences @Colossal : https://www.youtube.com/@Colossal
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Eric Meer
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Chapters:
0:00 Help Protect Public Media
0:28 Intro - The first de-extinction?
2:38 Are these ACTUALLY dire wolves?
4:15 Functional de-extinction and "proxy" species
7:58 What IS a species anyway?
10:48 But wait, isn't their ecosystem extinct too?
15:33 Will Colossal share this technology?
16:33 Artificial wombs and more
18:25 Should we solve other environmental problems first?
21:16 Could this be misused or abused?
23:42 Should we be doing this?
25:24 Conclusion



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Teacherflix
0 المشاهدات · منذ 3 الشهور

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
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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/T....hayer/E/Roman/Texts/
http://penelope.uchicago.edu/~....grout/encyclopaedia_
http://penelope.uchicago.edu/~....grout/encyclopaedia_


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

Teacherflix
0 المشاهدات · منذ 3 الشهور

It’s the Great American Read!
Vote for America's favorite novel: https://to.pbs.org/2Jes2X5
↓↓↓ More info and sources below ↓↓↓

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
Music via APM
Stock images from Shutterstock http://www.shutterstock.com

Teacherflix
0 المشاهدات · منذ 3 الشهور

Check out American Veteran on @pbsvoices ►► https://youtu.be/P8bt1bwllZg
We’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart
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The biggest thing that has ever lived on Earth… is a tree? Hard to believe, but it’s true. Travel with me to the Rocky Mountains of Colorado to go inside a giant aspen clone, the most massive species on our planet, and learn what unique and special evolutionary adaptations let them get so big.

Thanks to Dr. Jeffry B. Mitton (UC-Boulder) for sharing his years of research into giant quaking aspens and for telling us where to go see such pretty fall colors

References:

Mitton, J. B. & Grant, M. C. Observations on the Ecology and Evolution of Quaking Aspen, Populus tremuloides, in the Colorado Front Range. 9 (2021).

Mitton, J. B. & Grant, M. C. Genetic Variation and the Natural History of Quaking Aspen. BioScience 46, 25–31 (1996).

Grant, M. C., Mitton, J. B. & Linhart, Yan. B. Even larger organisms. Nature 360, 216–216 (1992).

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Baerbel Winkler
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Dustin
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AlecZero

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The famous painter who was half-honeybee
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Claude Monet had a very unique eye, and it can teach us a bit about the science of vision
More reading:

Monet's Eye at Download the Universe:
http://www.downloadtheuniverse.....com/dtu/2012/04/mon

Simulation of Monet's Cataracts:
http://archopht.jamanetwork.co....m/article.aspx?artic

More:
http://petapixel.com/2012/04/1....7/the-human-eye-can-
http://www.skepticalartist.com..../2013/06/25/claude-m

Music:
Johann Sebastian Bach - Goldberg Variations

(From The Open Goldberg Variations, by Kimiko Ishizaka
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Have an idea for an episode or an amazing science question you want answered? Leave a comment below!

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Joe Hanson - Host and writer
Joe Nicolosi - Director
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Kate Eads - Associate Producer
Katie Graham - Director of Photography
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John Knudsen - Gaffer

Produced for PBS Digital Studios
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Last week's video:
The Science of Snowflakes: http://www.youtube.com/watch?v=fUot7XSX8uA

More videos:
The Universe In A Glass of Wine: https://www.youtube.com/watch?v=b3_n7TDL7lc
Why We Cook: http://www.youtube.com/watch?v=Wpfwu__PF7Y
Ghosts of Evolution: https://www.youtube.com/watch?v=ZWW5OuxlKec

Teacherflix
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Life’s been around on Earth for at least 3.7 billion years. But for most of that time, it was incredibly boring — just simple little cells squirming around in water. It only got interesting in the last few hundred million years. And that might never have happened without the help of a deadly, but also life-giving, element.

References: https://sites.google.com/view/....great-oxygenation-re

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Teacherflix
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Evolution doesn’t pick a side!
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In almost every animal species on Earth, equal numbers of males and females are conceived. Why is that? Especially in populations like lions or elephant seals, where most males don’t get to mate? That’s survival of the laziest, not survival of the fittest. It turns out that in most cases, an equal balance of the sexes is the evolutionary stable strategy. From Charles Darwin to Ronald Fisher to W.D. Hamilton to Richard Dawkins, the question of why there’s as many males as females has fascinated biologists. Today, we’ll explain why that is the way it is.

READ MORE:

Fisher, R. A. “The genetical theory of natural selection”

Dawkins, Richard “The Selfish Gene” http://amzn.to/2omkuFr

Hamilton, W. D. (1967). Extraordinary sex ratios. Science, 156(3774), 477-488.

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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
Writer: Stephanie Keep
Creative Director: David Schulte
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Produced by PBS Digital Studios
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Teacherflix
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This time, we're the asteroid.

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

Read "The Sixth Extinction by Elizabeth Kolbert: http://amzn.to/1xGKn0K

Rodolfo Dirzo et al. "Defaunation in the Anthropocene" http://bit.ly/1H7JQdw
Stuart Pimm et al. "Biodiversity of Species and Their Rates of Extinction" http://bit.ly/1A5UZJM

Get to know an endangered species: http://discover.iucnredlist.org/

Half of world's wildlife has died off in past 40 years: http://bit.ly/1BHl8jR

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/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen Inc
Kate Eads - Associate Producer
Katie Graham - Director of Photography
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Dalton Allen - Post-production intern
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Follow me to MONSTRUM! https://youtu.be/x-GjSU4nOxE
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Ever feel like you aren't totally yourself? Well, maybe you aren't. In this video, we explore the idea of human chimeras. In mythology, the "Chimaera" was a beast made from different animals combined into one. But in biology, a chimera is a single organism whose body is made from parts of two or more genetically distinct individuals of the same species. Biological chimeras were once thought to be rare, but modern genetics has shown us that these genetic mashups are so common, that you yourself may actually be a chimera. And even if you don't have part of another body in you, your body is certainly not just one thing. We also discuss the idea of mosaicism and how it relates to cancer, Tasmanian devils, and circus sideshow attractions. #genetics #chimera

Special thanks to Dr. Emily Zarka, our favorite monsterologist!

SOURCES: https://sites.google.com/view/....human-chimeras-refer

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Check out Far Out on @pbsterra : https://youtu.be/jpUjze3v_6c
Check out Why Am I Like This? on @pbsterra : https://youtu.be/eWzBNfBnFys

What's the tallest mountain on Earth? It might seem like an easy question to answer, but in reality it's one that brings up more NEW questions than answers. It turns out that the way we measure mountains rests on a lot of approximations, assumptions, and averages. And when you dig into those, there's several contenders for the tallest mountain, each with their own good case for the title. So, which mountain do YOU think should take the throne?

References: https://sites.google.com/view/....references-tallest-m

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Teacherflix
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This video is perfect for adults orchids.
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PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/PBSDSDonate

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Many creatures wear disguises in order to keep safe from predators, but there are some that dress to kill. Orchid mantises are one of nature’s most awesome examples of aggressive mimicry. These killer insects are almost indistinguishable from orchids! Scientists recently learned that their disguise doesn’t work quite how we thought it did.

Special thanks to YouTuber Fruchtpudding for letting us use their awesome orchid mantis hunting footage! https://www.youtube.com/user/Fruchtpudding

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READ MORE:

O’Hanlon, J. C. (2016). Orchid mantis. Current Biology, 26(4), R145-R146.

O’Hanlon, J. C., Holwell, G. I., & Herberstein, M. E. (2013). Pollinator deception in the orchid mantis. The American Naturalist, 183(1), 126-132.

O’Hanlon, J. C., Herberstein, M. E., & Holwell, G. I. (2014). Habitat selection in a deceptive predator: maximizing resource availability and signal efficacy. Behavioral Ecology, 26(1), 194-199.

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It’s Okay To Be Smart is hosted by Joe Hanson, Ph.D.
Director: Joe Nicolosi
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Producer: Stephanie Noone and Amanda Fox

Produced by PBS Digital Studios
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Teacherflix
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Thank you to Brilliant for supporting PBS. To learn more, go to: https://brilliant.org/BeSmart/
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How many times do you look in a mirror every day? Have you ever stopped to wonder how they actually work? Mirrors do strange things to our world, seemingly flipping everything so that what was right is left and what was left is right. But what if I told you that mirrors don’t actually flip the world left to right? The real magic of mirrors is far stranger and more interesting, as you’re about to learn.

Inspired by:
Gardner, Martin - The New Ambidextrous Universe: Symmetry and Asymmetry from Mirror Reflections to Superstrings

Check out It's Lit: Unabridged, a new podcast from PBS:
iTunes: https://podcasts.apple.com/us/....podcast/its-lit-unab
Spotify: https://open.spotify.com/show/....4XOCT3jhB12mYcbA15h7

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