...and other Christmas mysteries answered with science!
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

Happy Holidays! Ever wonder how Santa could possibly manage to deliver all those presents in a single night? Or what gives red-nosed reindeer the ability to fly? And why do your Christmas lights get tangled in knots no matter how carefully you put the away?!

Here's some Christmas-themed science, as our gift to you. See you in 2015!

SOURCES:
Why Christmas lights tangle: "Spontaneous knotting of an agitated string" http://www.pnas.org/content/104/42/16432

Apollo 8 "Santa sighting" https://archive.org/details/Apollo8Highlights

Santa's reindeer are probably female: http://www.livescience.com/321....49-are-santas-reinde

Reindeer hair is hollow and "buoyant" http://www.ncbi.nlm.nih.gov/pubmed/6150798

Reindeer really do have red noses: http://www.bmj.com/content/345..../bmj.e8311.full.pdf+

Reindeer eyes change color: http://phenomena.nationalgeogr....aphic.com/2013/10/29

Santa's challenge (check my math!): http://bit.ly/1sOW15q

Produced for PBS Digital Studios

Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen Inc
Kate 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

-----------
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/collec....tions/its-okay-to-be

Facebook
https://www.facebook.com/itsokaytobesmartpbs/

Thank you to Bill and Melinda Gates for supporting PBS Digital Studios. If you’d like to take a look at the 2018 Annual Letter, you can check it out here http://b-gat.es/2Cfph0j
↓↓↓ More info and sources below ↓↓↓

Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub

Is overpopulation real? Is Earth filling up with too many humans? How many people can Earth hold, anyway? As our species approaches 8 billion, human overpopulation is a major concern for many people. How can we reduce poverty and our impact on the environment? Do we need a forced one-child policy or something? Maybe not, because when we look at the science and history, populations seem to control themselves. This week we look at all these questions and more.

READ MORE:

https://ourworldindata.org

https://www.sciencemag.org/sit....e/special/population

http://science.sciencemag.org/content/346/6206/234

https://www.scientificamerican.....com/article/are-mal

-----------
FOLLOW US:

Merch: https://store.dftba.com/collec....tions/its-okay-to-be
Facebook: http://www.facebook.com/itsokaytobesmart
Twitter:@DrJoeHanson @okaytobesmart
Tumblr: http://www.itsokaytobesmart.com
Instagram: @DrJoeHanson

-----------

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: Karl Boettcher
Producer: Stephanie Noone and Amanda Fox

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

Thank you to Wren for supporting PBS. To learn more, go to https://wren.co/start/besmart
We’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart
↓↓↓ More info and sources below ↓↓↓

I’m vaccinated. I’m boosted. And I still got infected with the omicron variant of COVID-19. Here’s what I learned, and what it means for the possible end of this pandemic.

References and sources:
https://sites.google.com/view/....be-smart-omicron-cov

0:00 Intro
1:16 What is Omicron?
2:23 Is Omicron more contagious?
4:31 What's different about Omicron?
5:42 Is Omicron less severe?
8:07 Are the vaccines ineffective?
9:55 What no one's saying about vaccines
11:34 Injection + Infection: Is "hybrid immunity" better?
13:46 Will Omicron end the pandemic?
15:41 Final thoughts

-----------

Special thanks to our Brain Trust Patrons:

Mehdi Damou
Barbora Bei
Ken Board
The Clinger-Hamilton Family
Attila Pix
Burt Humburg
DeliciousKashmiri
Brian Chang
Roy Lasris
dani bowman
David Johnston
Salih Arslan
Baerbel Winkler
Robert Young
Amy Sowada
Eric Meer
Dustin
Karen Haskell
AlecZero

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/collec....tions/its-okay-to-be

Facebook
https://www.facebook.com/itsokaytobesmartpbs/

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 ↓

We're on PATREON now! Join the community ►► https://www.patreon.com/itsokaytobesmart
SUBSCRIBE so you don't miss a video! ►► http://bit.ly/iotbs_sub

Stay informed. Stay cautious, but not scared. Listen to scientists and public health officials and follow their guidance. By protecting yourself, you're protecting the most vulnerable among us. Together we can flatten the curve on COVID-19 and SARS-CoV-2. More resources below!
#COVID-19 #SARS-CoV-2 #FlattenTheCurve

3Blue1Brown on exponential growth: https://www.youtube.com/watch?v=Kas0tIxDvrg

Get info from trusted sources:
https://www.cdc.gov/coronaviru....s/2019-ncov/index.ht
https://www.who.int/emergencie....s/diseases/novel-cor
https://ourworldindata.org/coronavirus

References used: https://sites.google.com/view/....covid-19-flattenthec

Special thanks to our Brain Trust Patrons:
AlecZero
Brent M.
Diego Lombeida
Dustin
Ernesto Silva
George Gladding
Marcus Tuepker
Ron Kakar
vincbis

-----------
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/collec....tions/its-okay-to-be

Facebook
https://www.facebook.com/itsokaytobesmartpbs/

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 ↓

SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub


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/collec....tions/its-okay-to-be

Facebook
https://www.facebook.com/itsokaytobesmartpbs/

Books from our episodes:
http://smart-books.tumblr.com/

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 ↓

Pucker up. I'm gonna lay some science on you!

When you really think about it, kissing is an odd human behavior. You know, all the rubbing of our faces all over each other. So there must be a good reason why we do it, right? From motherly comforts to testing the genetic compatibility of your "mate", the science of kissing is pretty awesome.

Learn more about "The Science of Kissing" by Sheril Kirshenbaum at http://amzn.to/Nuy0TE

Sheril's book has an extensive bibliography if you'd like to look more closely at any of these studies, but here's a couple that I mentioned:

Study of facial features and attractiveness ("men prefer fuller, redder lips"): http://psycnet.apa.org/journals/psp/68/2/261/

Claus Wedekind's famous "t-shirt" study: http://www.ncbi.nlm.nih.gov/pubmed/7630893

"Why do mothers cradle their babies on the left?" by Sieratzki and Woll, 1996 http://www.researchgate.net/pu....blication/14543476_W

Want to know more about the famous Austin mural where we shot this? http://www.austin360.com/news/....entertainment/share-

Did you catch the cameo from Julia Wilde? http://www.youtube.com/user/wildescience

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
Isaac Hammons - Sound

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/collec....tions/its-okay-to-be

Facebook
https://www.facebook.com/itsokaytobesmartpbs/

Take the PBS Digital Studios Audience Survey: https://to.pbs.org/pbssurvey2023a
↓↓↓ More info and sources below ↓↓↓

Humans can develop intense relationships, even obsessions, with the things we’re fans of. A huge part of our identities, our emotions, and our lives get tied up in these things. Why are we like this?

Join our Patreon community: https://www.patreon.com/itsokaytobesmart
SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub

-----------

High fives to all our Brain Trust Patrons:

Charles Horton, Jr
Holly, Brett, and Ashe Bullion
Jaap Westera
Millennial Glacier
Mehdi Damou
Barbora Bei
Burt Humburg
dani bowman
David Johnston
Baerbel Winkler
Robert Young
Eric Meer
Karen Haskell

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/collec....tions/its-okay-to-be

Facebook
https://www.facebook.com/itsokaytobesmartpbs/

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

Tweet this ⇒ http://bit.ly/OKTBStree Share on FB ⇒ http://bit.ly/OKTBStreeFB
Try Squarespace: http://squarespace.com/itsokaytobesmart
↓ More info and sources below ↓


Crowther, T. W., et al. "Mapping tree density at a global scale." Nature 525.7568 (2015): 201-205.
http://www.nature.com/nature/journal/...

Learn more about forest habitats: http://www.worldwildlife.org/habitats...

And let’s hear it for John Denver… https://www.youtube.com/watch?v=YBEkj...


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
Follow on Snapchat: YoDrJoe

-----------------
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)

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

Links to all these awesome stories below!
Finish 2016 on a high note and SUBSCRIBE! http://bit.ly/iotbs_sub
↓ More info and sources below ↓

Want to wear your love for science? We’ve got merch: http://dftba.com/besmart

1. Gravitational waves: http://www.nature.com/news/gra....vitational-waves-1.1
2. AlphaGo beats Lee Sedol: http://www.theatlantic.com/tec....hnology/archive/2016
3. CRISPR tested in a human: http://www.nature.com/news/cri....spr-gene-editing-tes
4. Minimal synthetic organism: http://www.sciencemag.org/news..../2016/03/synthetic-m
5. SpaceX rocket landings: http://www.space.com/33461-spa....cex-rocket-landings-
6. Closest known exoplanet: https://www.eso.org/public/news/eso1629/
7. Alzheimer’s drug trial success: http://www.sciencealert.com/a-....new-alzheimer-s-drug
8. Three-parent baby born: https://www.newscientist.com/a....rticle/2107219-exclu
9. Paris climate agreement goes into effect: https://www.wired.com/2016/12/....2016-pivotal-year-wa
10. Antarctic ozone hole is healing: http://www.bbc.com/news/scienc....e-environment-366749
11. Ross Sea becomes largest marine protected area: http://news.nationalgeographic.....com/2016/10/ross-se
12. Giant pandas are no longer endangeredL http://www.worldwildlife.org/s....tories/giant-panda-n
13. Wild tigers on the rise: http://news.nationalgeographic.....com/2016/04/160410-
14. Cool new species: http://www.livescience.com/545....46-chewbacca-beetle-
http://www.npr.org/sections/th....etwo-way/2016/06/02/
http://www.livescience.com/555....63-game-of-thrones-d
http://www.bbc.com/news/world-asia-38325099
15. Casper the ghost octopus: http://www.slate.com/blogs/the...._slatest/2016/03/06/

16. Ghost shark filmed: http://news.nationalgeographic.....com/2016/12/pointy-
17. LIchen symbiosis decoded: http://www.theatlantic.com/sci....ence/archive/2016/07
18. Jeremy the backwards snail finds a partner: http://www.wired.co.uk/article..../snail-jeremy-left-h
19. Solar powered plane flies around world: https://www.theguardian.com/en....vironment/2016/jul/2
20. New glasses for colorblind people: https://www.technologyreview.c....om/s/601782/how-ench
21. Juno mission updates: https://www.missionjuno.swri.edu/
22. Rosetta completes comet mission: http://gizmodo.com/watch-roset....ta-s-entire-mission-
23. Scott Kelly and Mikhail Kornienko’s year in space: https://www.nasa.gov/content/a-year-in-space

----------------
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
Twitter: http://twitter.com/okaytobesmart
http://twitter.com/jtotheizzoe
Tumblr: http://www.itsokaytobesmart.com
Instagram: http://instagram.com/jtotheizzoe
Snapchat: YoDrJoe

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

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.co....m/post/42845983348/r

Semiconductor Films - "20 Hz"
http://www.itsokaytobesmart.co....m/post/44264199289/2

Van Allen Belt chorus
http://www.itsokaytobesmart.co....m/post/32692373350/c

Daniel Starr-Tambor - "Mandala"
http://www.itsokaytobesmart.co....m/post/15977543553/m (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/collec....tions/its-okay-to-be

Facebook
https://www.facebook.com/itsokaytobesmartpbs/

🍎 Enjoy our growing library of math videos at https://www.numberock.com 🍎

Thank you for watching Numberock's Fractions Song Compilation.

#Math #Fraction #Grade6

🎵 STREAM THE MUSIC: https://thejunipervale.com/latest-release
👕 CHECK OUT THE MERCH: https://thejunipervale.com/store
🐢 JOIN MY PATREON: https://patreon.com/junipervale

💖 LET'S CONNECT!💖
INSTAGRAM: https://instagram.com/thejunipervale
TWITTER: https://twitter.com/thejunipervale
FACEBOOK: https://facebook.com/thejunipervale

💌 Business Inquiries: mgmt@vohnicmusic.com

✏️READ THE LYRICS:
Wrapped myself up in all the tattered pages; a forlorn fable
Faded lines, my message in a bottle is shattering now
And sinking down
I'm growing to know time as it goes
Everything's changing

Break me with that truth take all my fractions
Shaping something new out of the fragments
Light up this old soul
I was broken now I'm golden
Now I'm golden
Oh Woah Oh Woah Oh Woah Oh Woah Oh
Ooo Woah Oh Woah Oh Woah Oh

Grasping out
Tell me that you hope to hear
The words resound
That growing to know
Time, as it goes, is life

Break me with that truth take all my fractions
Shaping something new out of the fragments
Light up this old soul
I was broken now I'm golden
Now I'm golden
Oh Woah Oh Woah Oh Woah Oh Woah Oh
Ooo Woah Oh Woah Oh Woah Oh

Open my eyes
This is life
Change comes with time
This is life

Break me with that truth
Break me with that truth

Break me with that truth take all my fractions
Shaping something new out of the fragments
Light up this old soul
I was broken now we're golden
Now we're golden
Oh Woah Oh Woah Oh Woah Oh Woah Oh
Ooo Woah Oh Woah Oh Woah Oh

Open my eyes, this is life (Now we're golden)
Change comes with time (Now we're golden)
I was broken now I'm golden
Now I'm golden

https://genius.com/Juniper-vale-fractions-lyrics

🐢 Juniper Vale is a project that combines Banjo EDM and comic book illustrations to explore the concept of home. :) Thanks so much for watching! Love you lots! Bye!

Music & Art© 2019 I the AI Records

This is our Tiny Tune all about fractions. In this video we look at how divide up a whole into equal parts to give us a denominator. Then the parts that we want to count are called the numerator. Together these give us a fraction. The song gives some simple demonstrations and has a few examples at the end for students to have a go at themselves.

Song Written and Performed by Nathan J Laud.
Animation by Squash & Stretch Animation Ltd.
Copyright 2019 Nathan J Laud/Tiny Tunes: All rights reserved.
This is an ORIGINAL song written in 2019 - any copying is illegal.

If you like our songs please subscribe to hear more
SUBSCRIBE: http://www.youtube.com/channel..../UCA2a3eJr45knbxHSQ3

#TinyTunes #NumberSongs #Fractions

Song lyrics
What is a fraction?
We use them for counting part of something,
and all of that something we call a whole.
Then we divide up the whole into equal parts
and we call that the denominator.
And then the parts that we want to count, the numerator.

We are fractions,
we are fractions.
The part of a whole that we want to count,
is a fraction.

If you take a whole pizza,
and cut it up into equal slices.
Then the number of slices goes under then line.
And then your friend comes along and eats up two slices,
and that leaves you with six.
And then the six goes on top,
and we're left with six eights of a pizza.

We are fractions,
we are fractions.
The part of a whole that we want to count,
is a fraction.

Take a big bar of chocolate,
that's divided up into twenty-four parts.
That makes the denominator 24.
And if we break off eight of those chunks of chocolate,
what fraction have we got?
That's right it's eight twenty-forths of a bar of chocolate.

We are fractions,
we are fractions.
The part of a whole that we want to count,
is a fraction.
We are fractions,
we are fractions.
The part of a whole that we want to count,
is a fraction.

🍎 Enjoy our growing library of math videos at https://www.numberock.com 🍎

Thank you for watching Numberock's Fractions Song Compilation.

Vintage Culture - Fractions [Tomorrowland Music]
Stream: https://tomorrowland.lnk.to/Fractions

•Vintage Culture:
http://vintageculture.com.br
http://instagram.com/vintageculture
http://twitter.com/VintageCulture
https://soundcloud.com/vintageculturemusic
http://facebook.com/vintageculturemusic

#tomorrowland #vintageculture #fractions

Learn how to work out Fractions and what makes up a Fraction with Mr Mercer, using the tune of "APT" by ROSÉ & Bruno Mars! 🎵🎶

This song will help you remember what a fraction is, how to find fractions of shapes and numbers, and what each part of the fraction is called! It also gives you top tips for finding halves and quarters! A very fun song to use too! 😄😁

Like, Share and Subscribe for more Maths Learning songs from Mr Mercer!

#MathswithMrMercer #fractions #numbers #numbersong #halves #quarters #education #maths #math #song #singing #learning #pop #rose #rosé #brunomars #apt #kpop #kpopedit