If humans want to expand into space, it will take us incredible amounts of energy. How do we do that? Easy: we will just use the sun’s energy by realizing the most ambitious construction project in history. This is how it works.

Sources:
https://sites.google.com/view/....sourcesdysonsphere/s


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Interactions between species are what define ecological communities, and community ecology studies these interactions anywhere they take place. Although interspecies interactions are mostly competitive, competition is pretty dangerous, so a lot of interactions are actually about side-stepping direct competition and instead finding ways to divvy up resources to let species get along. Feel the love?

Table of Contents
1) Competitive Exclusion Principle 2:02
2) Fundamental vs. Realized Niche 3:48
3) Eco-lography / Resource Partitioning 5:25
4) Character Displacement 7:29
5) Mutualism 9:15
6) Commensalism 9:55

References
http://www.sciencedaily.com/ar....ticles/c/competitive
http://www.youtube.com/watch?v=GbRPDGikcnc
http://www.instruction.greenri....ver.edu/mcvay/ES204%
http://www.sciencedaily.com/ar....ticles/e/ecological_
http://www.stanford.edu/group/stanfordbirds/text/essays/MacArthur's_Warblers.html
http://uts.cc.utexas.edu/~varanus/MacArthur.html
http://www.jstor.org/discover/10.2307/1383283?uid=3739960&uid=2129&uid=2&uid=70&uid=4&uid=3739256&sid=21101174112437
http://www.cals.ncsu.edu/cours....e/ent591k/symbiosis.
http://www.eoearth.org/article/Community_ecology
http://livingseas.org/2011/01/....22/killer-whales-sta
http://www.ecy.wa.gov/programs..../sea/pugetsound/beac
http://www.visitolympicpeninsu....la.org/tidepools.htm
http://www.annualreviews.org/d....oi/abs/10.1146/annur
http://eol.org/pages/484359/overview
http://www.geog.ubc.ca/biodive....rsity/efauna/Introdu
http://www.daviddarling.info/e....ncyclopedia/S/symbio
http://blogs.discovermagazine.....com/discoblog/2012/0
http://sites.sinauer.com/ecology2e/webext11.1.html
http://www.stanford.edu/group/stanfordbirds/text/essays/MacArthur's_Warblers.html
http://www.annualreviews.org/d....oi/pdf/10.1146/annur

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Cancer is a creepy and mysterious thing. While we tried to understand it, to get better at killing it, we discovered a biological paradox that remains unsolved to this day: large animals seem to be immune to cancer. Which doesn’t make any sense – the bigger a being, the more cancer it should have. To understand why, we first need to take a look at the nature of cancer itself.

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What happens if we make a huge pile from all 15,000 nuclear bombs and pull the trigger? And what happens if we make an even bigger pile?


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Help us caption & translate this video!https://www.youtube.com/timedtext_cs_panel?c=UCsXVk37bltHxD1rDPwtNM8Q&tab=2

Today we explore what obligations we hold with our personal beliefs. Hank explains epistemic responsibility and the issues it raises with everything from religious belief, to ship owning, to vaccinations.

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Sources & further reading:
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At this very second, you are on a narrow ledge between life and death. You probably don’t feel it, but there is an incredible amount of activity going on inside you. And this activity can never stop.

Picture yourself as a slinky falling down an escalator moving upwards – the falling part represents the self replicating processes of your cells, the escalator represents the laws of physics, driving you forwards. To be alive is to be in motion but never arriving anywhere. If you reach the top of the escalator there is no more falling possible and you are dead forever.

Somewhat unsettlingly, the universe wants you to reach the top. How do you avoid that and why are you alive?

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It's time to heat things up! LITERALLY! It's time for Hank to talk about the history of Thermodynamics!!! It's messy and there are a lot of people who came up with some ideas that worked and other that didn't and then some ideas that should have come first actually were figured out second.

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In which John Green explores F. Scott Fitzgerald's novel of the Jazz Age, The Great Gatsby. John introduces you to Nick Carraway, Jay Gatsby, Daisy and Tom Buchanan, and the other characters in the novel, and tries to look beyond the surface story to figure out what this thing is ABOUT. Set in the 1920s against a conflicted backdrop of prohibition and excess, The Great Gatsby takes a close look at the American Dream as it existed in Fitzgerald's time. It turns out, it had a lot to do with money and status, and it still does today. John will cover the rich symbolism of the novel, from the distant green light to the pale gold of wealth and decay. Also, Paris Hilton drops by.

Turn on the captions. You'll like it.

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🍽️🎨 Let’s cook and create with Violet and her silly friend, Chef Matisse! In this fun-filled episode, kids will laugh and learn as Violet draws the perfect-sized salad, bread, milkshake, and even a super tall chocolate cake! Along the way, children explore size words, shapes, problem-solving, and the joy of sharing with friends. 🤏🔺🤝

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Today we’re rounding out our planetary tour with ice giants Uranus and Neptune. Both have small rocky cores, thick mantles of ammonia, water, and methane, and atmospheres that make them look greenish and blue. Uranus has a truly weird rotation and relatively dull weather, while Neptune has clouds and storms whipped by tremendous winds. Both have rings and moons, with Neptune’s Triton probably being a captured iceball that has active geology.

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Chapters:
Introduction: Uranus 00:00
Uranus's Structure 1:35
Uranus's Atmosphere 2:53
Uranus's Weird Tilt 3:55
Uranus's Moons 5:12
Uranus's Rings 6:00
Neptune's Structure 6:35
Neptune's Atmosphere 7:02
Neptune's Magnetic Field & Rings 8:10
Triton: Neptune's Largest Moon 8:36
The Discovery of Neptune 9:52
Review 11:27
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PHOTOS/VIDEOS
Uranus http://en.wikipedia.org/wiki/V....oyager_2#/media/File [credit: NASA/JPL/Voyager mission]
Neptune https://www.nasa.gov/content/2....5-years-ago-voyager- [credit: NASA]
King George III http://en.wikipedia.org/wiki/G....eorge_III_of_the_Uni
Uranus from Earth picture by Phil Plait
Uranus, Earth size comparison http://en.wikipedia.org/wiki/F....ile:Uranus,_Earth_si [credit: NASA]
Uranus core, reconstructed from http://en.wikipedia.org/wiki/F....ile:Uranus-intern-en [credit: Wikimedia Commons]
Uranus http://www.spacetelescope.org/....static/archives/imag [credit: NASA, ESA, L. Sromovsky and P. Fry (University of Wisconsin), H. Hammel (Space Science Institute), and K. Rages (SETI Institute)]
Uranus storms http://www.keckobservatory.org..../images/made/images/ [credit: Imke de Pater (UC–Berkeley)/Keck Observatory]
Uranus and rings (tilt demonstration) http://en.wikipedia.org/wiki/U....ranus#/media/File:Ur [credit: Hubble Space Telescope - NASA Marshall Space Flight Center]
Uranus with rings and moons http://www.eso.org/public/images/eso0237a/ [credit: ESO]
Miranda http://en.wikipedia.org/wiki/M....oons_of_Uranus#/medi [credit: NASA]
Verona Rupes http://apod.nasa.gov/apod/ap110404.html [credit: NASA]
Neptune’s Interior https://solarsystem.nasa.gov/m....ultimedia/display.cf [credit: Lunar and Planetary Institute]
Neptune clouds http://en.wikipedia.org/wiki/F....ile:Neptune_clouds.j [credit: NASA]
Neptune’s Great Dark Spot http://en.wikipedia.org/wiki/N....eptune#/media/File:N [credit: NASA / Jet Propulsion Lab]
Neptune’s Rings http://www.rolfolsenastrophoto....graphy.com/Astrophot [credit: Rolf Wahl Olsen / NASA/JPL (Voyager 2, NASA Planetary Data System)]
Triton http://en.wikipedia.org/wiki/T....riton_(moon)#/media/ [credit: NASA / Jet Propulsion Lab / U.S. Geological Survey]
Triton flipped http://en.wikipedia.org/wiki/F....ile:PIA01538_Triton_ [credit: NASA/JPL]
Triton Nitrogen Geysers http://en.wikipedia.org/wiki/T....riton_(moon)#/media/ NASA]

https://www.abcmouse.com/learn/youtube

"The Wheels on the Bus" (See below for lyrics)

Did you know that you can use "The Wheels on the Bus" to help teach children beginning rhymes and basic fine motor skills? As you play this song, encourage your child to make the motions for the windshield wipers, honking the horn, and of course, the spinning wheels.

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ABCmouse.com is an award-winning website that uses a variety of activities, including these songs, to help children build a strong foundation for future academic success. ABCmouse.com Early Learning Academy provides a full online curriculum from preschool through 2nd grade, with more than 10,000 interactive learning activities that teach the subjects of reading, math, science, social studies, art, and music.

Parents, learn more about ABCmouse.com at https://www.abcmouse.com/learn/youtube

Song Lyrics:
The wheels on the bus go round and round,
round and round, round and round.
The wheels on the bus go round and round,
all through the town.
The wipers on the bus go swish, swish, swish,
swish, swish, swish, swish, swish, swish.
The wipers on the bus go swish, swish, swish,
all through the town.

The horn on the bus goes beep, beep, beep,
beep, beep, beep, beep, beep, beep.
The horn on the bus goes beep, beep, beep,
all through the town.
The people on the bus go up and down,
up and down, up and down.
The people on the bus go up and down,
all through the town.

The babies on the bus go, whah, whah, whah,
whah, whah, whah, whah, whah, whah.
The babies on the bus go whah, whah, whah,
all through the town.
The grownups on the bus go shh, shh, shh,
shh, shh, shh, shh, shh, shh.
The grownups on the bus go shh, shh, shh,
all through the town.

The wheels on the bus go round and round,
round and round, round and round.
The wheels on the bus go round and round,
all through the town.

All through the town.
All through the town.

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In today’s episode, Hank asks you to consider all the ways people talk about justice and what we really mean when we use that word. We’ll explain various theories of justice, just distribution, and different approaches to punishment.

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Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios

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Agnes Martin's minimal paintings reproduce terribly. Their magic does not come though in photos or videos. Guest host John Green discusses Martin's art anyway, how it brilliantly captures emotion itself, and why you should seek it out.

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We've talked about a lot of revolutions in 19th Century Europe, and today we're moving on to a less warlike revolution, the Industrial Revolution. You'll learn about the development of steam power and mechanization, and the labor and social movements that this revolution engendered.

SOURCES

Hobsbawm, Eric. Studies in Archaic Forms of Social Movements in the 19th and 20th Centuries. New York: W. W. Norton, 1965.

Hunt, Lynn. et al. The Making of the West: Peoples and Cultures, 6th ed. Boston: Bedford St. Martin’s, 2019.

Kent, Susan Kingsley. A New History of Britain since 1688: Four Nations and an Empire. New York: Oxford University Press, 2017.

Riello, Giorgio. Cotton: The Fabric That Made the Modern World. Cambridge: Cambridge University Press, 2013.

Smith, Bonnie G. et al. World in the Making: A Global History. New York: Oxford University Press, 2019.


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Pre-order our book YOU ARE AN ARTIST (which includes new assignments!) here: http://bit.ly/2kplj2h So you look at a work of art and think to yourself, I could have done that. And maybe you really could have, but the issue here is more complex than that -- why didn't you? Why did the artist? And why does it have an audience? We delve into it by looking at work by artists like Felix Gonzalez-Torres, Piet Mondrian, and Cy Twombly, among others. You might find it’s not quite as simple as you think.

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Pre-order our book YOU ARE AN ARTIST (which includes new assignments!) here: http://bit.ly/2kplj2h On this international art trip, we travel to Tijuana to meet with Ghana Think Tank and Torolab, explore the city, and visit artist Hugo Crosthwaite's studio.

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This amazing multiplication trick possible has it's origins in Japan -although I have heard arguements it is a Vedic math trick.

Either way - this trick allows you to multiply two numbers quickly and accurately, using a handy visual method - lines.

This method does not use any multiplication tables, making it accessible to all learners.

Part 2 of this video (how to multiply using lines with fives and zeros) is here:
https://www.youtube.com/watch?v=kSUwRjy0rYI&list=PLjbxBzUM6SLkk-Pm6oDtvJc-lsM-xli_1&index=10

Arithmetic made simple!

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This trick allows you to work out the cube root of any number fairly quickly, - and what's more it is easy to learn and remember!
You'll be doing vube roots in your hear - faster than a calcuator.

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Ratios and proportions, scaling up and down, currency conversions...even percentages - these are easy to do using this easy to apply method.


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It really helps and is appreciated!

Direct division of Polynomials To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU To donate to the tecmath channel: https://paypal.me/tecmath?locale.x=en_AU
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