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Does The Moon Really Orbit The Earth? Teacherflix 4 vistas • 7 meses hace

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

What holds the moon up? Moonbeams!
Don’t miss our next video! SUBSCRIBE! ►► http://bit.ly/iotbs_sub
↓ More info and sources below ↓

According to Newton's law of gravitation, the sun should "pull" way harder on the moon than the Earth does. So does the moon actually orbit the Earth? Why?

Special thanks to Ariel for submitting this awesome question to our Facebook page!

Hill Spheres and lunar orbit: http://blogs.discovermagazine.....com/badastronomy/200

True shape of moon's orbit: http://www.math.nus.edu.sg/asl....aksen/teaching/conve

Newton's law of gravitation vs. Hill Sphere: https://van.physics.illinois.e....du/qa/listing.php?id
http://en.wikipedia.org/wiki/Hill_sphere

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
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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
Stephen Bohls - 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

French subtitles by Alessandro Dal Cero

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Last week's video:
What's The Loudest Possible Sound? https://www.youtube.com/watch?v=wi_aawsChqA

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

How The Toilet Changed History Teacherflix 4 vistas • 7 meses hace

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

This video was supported by Bill and Melinda Gates. You can check out the Gates Annual Letter here: http://b-gat.es/2lhhtmJ.
↓ More info and sources below ↓

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.
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

When Will We Stop Using Oil? Teacherflix 4 vistas • 7 meses hace

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

Check out our whole series on ENERGY! http://bit.ly/1BnH5zu
Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart
↓ More info and sources below ↓

We've heard news of "peak oil" and "the end of the oil age" for years now, but we keep coming up with ways to find and pump more of it to the surface. Rising CO2 levels and the changing climate that results from burning fossil fuels mean that we should probably stop using oil sooner rather than later, though
Let's take a look at history and see how we've used different fuels, so that we might figure out when and how to make oil a thing of the past
LEARN MORE:
Special thanks to Sheril Kirshenbaum and the Webber Energy Group at the University of Texas at Austin for their help with this series. http://www.webberenergygroup.com/

Check out their awesome online course "Energy 101" to learn about energy and energy policy from A to Z! http://www.energy101.com/

And to find out what people think about energy, check out the UT Energy Poll: http://www.utenergypoll.com/

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.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

Theme music:
"Ouroboros" by Kevin MacLeod

Other music via APM

Stock images from Shutterstock, stock footage from Videoblocks

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

Last week's video:
Does the Moon Orbit the Earth? https://www.youtube.com/watch?v=3cJ3AemeUFM

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

What Has New Horizons Taught Us About Pluto? Teacherflix 4 vistas • 7 meses hace

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

Pluto's not just cool… it's ICE COLD
Tweet ⇒ http://bit.ly/OKTBSpluto Share on FB ⇒ http://bit.ly/OKTBSplutoFB
↓ More info and sources below ↓

Since New Horizons flew by Pluto on July 14, 2015, it's completely redefined what we know about the dwarf planet and its largest moon Charon. New Horizons' mission will continue to be full of surprises, but here's what we've learned so far
T-SHIRTS! http://dftba.com/besmart

Unless otherwise noted, all images and animations courtesy of NASA/JHUAPL/SwRI

MORE NEW HORIZONS STUFF:
Calculate your Pluto time: http://solarsystem.nasa.gov/plutotime/
New Horizons image gallery: https://www.nasa.gov/mission_p....ages/newhorizons/ima
Planetary Society New Horizons news: http://www.planetary.org/blogs..../blog-archive.html?k
Nadia Drake's excellent New Horizons coverage: http://phenomena.nationalgeogr....aphic.com/search/plu
Pluto and Charon are weird: http://news.nationalgeographic.....com/2015/07/150715-
What kind of ices are on Pluto? http://space.io9.com/the-ice-o....f-pluto-is-more-dive
Pluto's hazy atmosphere: https://www.nasa.gov/press-rel....ease/nasa-s-new-hori
Geologic features of Pluto and Charon: http://space.io9.com/were-acti....vely-creating-the-ge
What are tholins? Why Pluto looks red: http://www.planetary.org/blogs..../guest-blogs/2015/07
Pluto's other moons, Nix and Hydra: http://www.nasa.gov/image-feat....ure/new-horizons-cap
Pluto's family portrait: http://www.planetary.org/multi....media/space-images/s
Dwarf planets of the solar system: http://www.space.com/18584-dwa....rf-planets-solar-sys
Catalog of unusual "minor planet objects" in solar system: http://www.minorplanetcenter.n....et/iau/lists/Unusual

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Merch
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Joe Hanson - Creator/Host/Writer
Joe Nicolosi - Director
Amanda Fox - Producer, Spotzen IncKate Eads - Producer
Stephen Bohls - 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

Why Vaccines Work Teacherflix 4 vistas • 7 meses hace

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

A dose of reality about vaccines…
Subscribe: http://bit.ly/iotbs_sub Twitter: @okaytobesmart
↓ More info and sources below ↓

As more and more parents are choosing not to vaccinate their children or are vaccinating them later, diseases like measles are making a comeback. What's behind this antivax movement? Are vaccines safe? How do vaccines work? Why do some people claim there is a link between vaccines and autism? This week we look at why are people afraid of something that has saved so many lives, and the history and science of vaccines. #vaccine #antivax #measles

REFERENCES AND FURTHER READING:

"The Panic Virus" by Seth Mnookin: http://amzn.to/1CB8Q7p
"On Immunity" by Eula Biss: http://amzn.to/1FTmmH1

Watch "Vaccines: Calling the Shots" from PBS' NOVA: https://www.youtube.com/watch?v=NVCO6_bpsEY

The Robert Falcon Scott expedition and the lost cure for scurvy, by Maciej Cegłowski: http://idlewords.com/2010/03/scott_and_scurvy.htm

The incredible value of vaccines: http://www.gavi.org/about/miss....ion/facts-and-figure

The Guardian's herd immunity simulation: http://www.theguardian.com/soc....iety/ng-interactive/

Map of global vaccine rates: http://gamapserver.who.int/gho..../interactive_charts/

How risky are vaccine side effects? http://www.cdc.gov/vaccines/va....c-gen/side-effects.h

Eula Biss on vaccines and empathy: http://www.vox.com/2015/2/6/79....92071/how-one-vaccin

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 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:
What is Déjà Vu? https://www.youtube.com/watch?v=ut8mYGi0YRs

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 health (industry) mmr polio