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In which John Green teaches you about the changes wrought by contact between the Old World and the New. John does this by exploring the totally awesome history book "The Columbian Exchange" by Alfred Cosby, Jr. After Columbus "discovered" the Americas, European conquerors, traders, and settlers brought all manner of changes to the formerly isolated continents. Disease and invasive plant and animal species remade the New World, usually in negative ways. While native people, plants, and animals were being displaced in the Americas, the rest of the world was benefitting from American imports, especially foods like maize, tomatoes, potatoes, pineapple, blueberries, sweet potatoes, and manioc. Was the Columbian Exchange a net positive? It's debatable. So debate.
Resources:
The Columbian Exchange, by Alfred Cosby, Jr: http://dft.ba/-columbian
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Today we explore the penultimate ethical theory in this unit: contractarianism. Hank explains Hobbes’ state of nature, and implicit and explicit contracts, as well as the Prisoner’s Dilemma, and the benefits, and costs, of violating contracts.
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Hank and his brother John discuss heredity via the gross example of relative ear wax moistness.
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This video uses sounds from Freesound.org, a list of which can be found, along with the REFERENCES for this episode, in the Google document here: http://dft.ba/-2dlR
tags: crashcourse, science, biology, evolution, genetics, heredity, aristotle, bloodlines, gregor mendel, mendelian genetics, mendelian trait, classical genetics, chromosome, gene, polygenic, pleiotropic, allele, ear wax gene, somatic, diploid, gametes, sperm, egg, haploid, polyploid, dominance, dominant, recessive, heterozygous, homozygous, phenotype, punnett square, reginald c. punnett, sex-linked inheritance, autosome Support CrashCourse on Subbable: http://subbable.com/crashcourse
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In which John Green teaches you, at long last, about the most exceptional bunch of empire-building nomads in the history of the world, the Mongols! How did the Mongols go from being a relatively small band of herders who occasionally engaged in some light hunting-gathering to being one of the most formidable fighting forces in the world? It turns out Genghis Khan was a pretty big part of it, but you probably already knew that. The more interesting questions might be, what kind of rulers were they, and what effect did their empire have on the world we know today? Find out, as John FINALLY teaches you about the Mongols.
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Hank gets down to the nitty gritty about meiosis, the special type of cell division that is necessary for sexual reproduction in eukaryotic organisms.
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References for this episode can be found in the Google document here: http://dft.ba/-2wDm
Table of Contents
1) Homologous Chromosome Pairs 2:10
2) Primary Oocytes 3:30
3) Primary Spermatocytes 3:30
4) Meiosis 2:59
5) Interphase I 4:04
6) Prophase I 4:37
a) Crossover 5:05
b) Recombination 5:05
7) Metaphase I 7:53
8) Anaphase I 8:05
9) Telophase I 8:19
10) Prophase II 8:57
11) Metaphase II 9:23
12) Anaphase II 9:28
13) Telophase II 9:32
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reproduction, sexual reproduction, sex cell, sperm, egg, meiosis, crashcourse, crash course, biology, cell replication, chromosome, gene, allele, homologous chromosome, haploid cells, prophase, metaphase, anaphase, telophase, oocyte, spermatocyte, centrosome, microtubule, crossover, homologous recombination, natural selection, cytokinesis, polar body, endosperm Support CrashCourse on Subbable: http://subbable.com/crashcourse
Our next stop on our tour of ethics is Kant’s ethics. Today Hank explains hypothetical and categorical imperatives, the universalizability principle, autonomy, and what it means to treat people as ends-in-themselves, rather than as mere means.
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Our next stop in our tour of the ethical lay of the land is utilitarianism. With a little help from Batman, Hank explains the principle of utility, and the difference between act and rule utilitarianism.
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My drawing book: http://amzn.to/1K7L8Ed
Subscribe on Patreon: https://www.patreon.com/artistleonardo
Visit me on FB: https://www.facebook.com/LeonardoPereznieto
My website: http://www.ArtistLeonardo.com/
O Art Int: http://oartinternational.com/
Do you want to help me translating it into your language?
(Note: First check if it hasn´t been translated already by pressing the "CC" button on the lower part of the video).
All you need to do is to please go to the following link and translate. Thank you!:
http://www.youtube.com/timedtext_video?ref=share&v=7f1qEzwhcoA
If you would like to invest in a drawing, painting or sculpture by Leonardo Pereznieto, or to hire him for workshops or lectures, please write to: info@artistleonardo.com (Business only, not for personal messages.)
List of materials:
Mechanical pencil: ArtistLeonardo Tutto3, with 0.3mm 2H lead, 0.5 HB and 0.7 mm 2B lead
Graphite powder
Chamoise
Kneaded eraser Prismacolor (See it here: http://amzn.to/2cvi6G7)
Ruler and square
Fabriano white drawing paper, fine grain
If you would like to see photos and brands of my tools, please go to my blog about materials with the following link:
http://fineart-tips.blogspot.m....x/2015/07/my-drawing
Download Fine Art-Tips mobile app:
On the Apple Store:
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On Google Play:
For Android free: https://play.google.com/store/apps/details?id=allmax.fine.art.tips.free2&hl=en
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I wish you great creations!
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This tutorial shows How to Draw Realistic Wood With Pencil
In this video I’m showing the process of working on an oil painting titled “Clouds”
REAL-TIME PAINTING VIDEOS, TUTORIALS and other helpful materials ▶ https://www.patreon.com/dariacallie
▷ For prints and original paintings please visit https://dariacallie.com/store/
CONNECT WITH ME:
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Materials used:
• Oil paints - "Nevskaya palitra"
Colors: Burnt Umber, Cadmium Yellow Pale, Ultramarine Blue, Cadmium Red and Titanium White.
• Frosted acrylic panel
• Paint thinner (odorless mineral spirits)
• Medium (stand linseed oil)
• Brushes - Detail brushes & Filbert synthetic brushes of different sizes
• Glass palette (homemade)
• Palette knife (from a local art-store)
• Paper towels (or tissues that I use to wipe the brushes)
Music: “Mirror lake” and “Soen” by Liam J Hennessy
https://soundcloud.com/liamjhennessy/
In this video I share some highlights from my Patreon painting tutorials.
REAL-TIME PAINTING VIDEOS, TUTORIALS and other helpful materials ▶ https://www.patreon.com/dariacallie
In my recent walk-through painting tutorial on Patreon I talk about:
Part 1: Surface preparation, concept sketching, taking a reference photo, color mixing, transferring the outlines.
Part 2: Painting a portrait, oil painting tips, common mistakes.
Part 3: Analyzing, adjusting things, glazing and basically doing all the finishing touches.
▷ For prints and original paintings please visit https://dariacallie.com/store/
CONNECT WITH ME:
Instagram: https://www.instagram.com/dariacallie/
Facebook: https://www.facebook.com/DariaCallieArt/
Website: https://www.dariacallie.com/
Materials used:
• Oil paints - "Nevskaya palitra"
Colors: Burnt Umber, Cadmium Yellow Pale, Ultramarine Blue, Cadmium Red and Titanium White.
For glazing I used Cadmium Red, Cadmium Yellow Pale and Cobalt Violet Deep.
• Primed 280gsm paper or linen canvas
• Acrylic primer “Sonnet”
• Paint thinner (odorless mineral spirits)
• Medium (stand linseed oil)
• Brushes - Detail brushes & Filbert synthetic brushes of different sizes
• Glass palette (homemade)
• Palette knife (from a local art-store)
• Paper towels (or tissues that I use to wipe the brushes)
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With its lizard-like appearance and that distinctive sail on it back, Dimetrodon is practically the mascot of the Palaeozoic Era, a time before flowers, birds, mammals, and even crocodiles. But if you take a close look at this sail-backed animal, you might see a little bit of yourself.
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Thanks to Franz Anthony and Studio 252mya for the Dimetrodon illustration. You can find more of Franz's work here: https://252mya.com/gallery/franz-anthony
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References:
https://evolution-outreach.spr....ingeropen.com/articl
http://www.app.pan.pl/article/....item/app20100039.htm
http://www.tandfonline.com/doi..../abs/10.1080/1042094
http://www.journals.uchicago.e....du/doi/10.1086/65300
http://onlinelibrary.wiley.com..../doi/10.1002/jmor.10
You can directly support Crash Course at https://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content.
In which John Green teaches you about Kurt Vonnegut's most famous novel, Slaughterhouse-Five. Vonnegut wrote the book in the Vietnam era, and it closely mirrors his personal experiences in World War II, as long as you throw out the time travel and aliens and porn stars and stuff. Slaughterhouse-Five tells the story of Billy Pilgrim, a World War II veteran who was a prisoner of war, and survived the Battle of the Bulge and the fire-bombing of Dresden, goes home after the war, and has trouble adapting to civilian life (this is the part that's like Vonnegut's own experience). Billy Pilgrim has flashbacks to the war that he interprets as being "unstuck in time." He believes he's been abducted by aliens, and pretty much loses it. You'll learn a little about Vonnegut's life, quite a bit about Dresden, and probably more than you'd like about barbershop quartets as a metaphor for post traumatic stress.
This week on Crash Course Economics, we're talking about monetary policy. The reality of the world is that the United States (and most of the world's economies) are, to varying degrees, Keynesian. When things go wrong, economically, the central bank of the country intervenes to try aand get things back on track. In the United States, the Federal Reserve is the organization that steps in to use monetary policy to steer the economy. When the Fed, as it's called, does step in, there are a few different tacks it can take. The Fed can change interest rates, or it can change the money supply. This is pretty interesting stuff, and it's what we're getting into today.
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Fatima Iqbal, Penelope Flagg, Eugenia Karlson, Alex S, Jirat, Tim Curwick, Christy Huddleston, Eric Kitchen, Moritz Schmidt, Today I Found Out, Avi Yashchin, Chris Peters, Eric Knight, Jacob Ash, Simun Niclasen, Jan Schmid, Elliot Beter, Sandra Aft, SR Foxley, Ian Dundore, Daniel Baulig, Jason A Saslow, Robert Kunz, Jessica Wode, Steve Marshall, Anna-Ester Volozh, Christian, Caleb Weeks, Jeffrey Thompson, James Craver, and Markus Persson
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In the penultimate episode of Crash Course Anatomy & Physiology, Hank explains your adaptive immune system. The adaptive immune system's humoral response guards extracellular terrain against pathogens. Hank also explains B cells, antibodies, and how vaccines work.
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Table of Contents
Adaptive Immune System's Humoral Response 1:19
How B Cells Mature, Identify Antigens, and Make Antibodies 2:42
How Antibodies Warm Pathogens and Mark Them for Death 5:22
Active and Passive Humoral Immunity 6:03
How Vaccines Work 6:27
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Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse
Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:
Mark, Eric Kitchen, Jessica Wode, Jeffrey Thompson, Steve Marshall, Moritz Schmidt, Robert Kunz, Tim Curwick, Jason A Saslow, SR Foxley, Elliot Beter, Jacob Ash, Christian, Jan Schmid, Jirat, Christy Huddleston, Daniel Baulig, Chris Peters, Anna-Ester Volozh, Ian Dundore, Caleb Weeks
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2,000 Years of Chinese History! The Mandate of Heaven and Confucius:
Crash Course World History #7
In which John introduces you to quite a lot of Chinese history by
discussing the complicated relationship between the Confucian scholars
who wrote Chinese history and the emperors (and empress) who made it.
Included is a brief introduction to all the dynasties in Chinese
history and an introduction to Confucius and the Confucian emphasis on
filial piety, the role the mandate of heaven played in organizing
China, and how China became the first modern state.
Crash Course World History is now available on DVD! http://store.dftba.com/product....s/crashcourse-world-
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Hank explains speciation - the evolutionary process by which new biological species arise - in terms of finches, ligers, mules, and dogs.
Crash Course Biology is now available on DVD! http://dft.ba/-8css
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References for this episode can be found in the Google document here: http://dft.ba/-2DnD
Table of Contents
1) Species 0:30
2) Hybrids 1:52
3) Reproductive Isolation 2:48
a) Post-Zygotic 3:31
b) Pre-Zygotic 3:51
4) Allopatric Speciation 4:23
5) Sympatric Speciation 6:03
6) Biolography 6:32
7) Dogs 8:37
This video contains the following sounds from Freesound.org:
"bird tweet.aif" by tigersound
"ForestBirds.wav" by HerbertBoland
"morning_in_the_forest_2007_04_15.wav" by reinsamba
"AMBIENT LOOP - Perfectly Clear - Wilderness Hillside - FILTERED.mp3" by Arctura
"oceanwavescrushing.wav" by Luftrum
biology, speciation, science, species, evolution, homo sapiens, organism, liger, napoleon dynamite, fertile, sterile, hybrid, hybridization, reproductive isolation, genetic isolation, pre-zygotic isolation, behavior, geographic, allopatric speciation, natural selection, galapagos, finch, artificial selection, corgi, greyhound, puppy, dog Support CrashCourse on Subbable: http://subbable.com/crashcourse
You can directly support Crash Course at https://www.patreon.com/crashcourse Subscribe for as little as $0 to keep up with everything we're doing. Free is nice, but if you can afford to pay a little every month, it really helps us to continue producing this content.
In which John Green teaches you about Harper Lee's famous (and only) novel, To Kill a Mockingbird. John will cover a bit about Harper Lee's personal life, (seeing as this novel has some autobiographical elements) and her long association with Truman Capote, who figures as a character in the book. You'll get an overview of the plot, and we'll talk a bit about Mockingbird as an example of bildungsroman (again(man, this description is heavy on parentheses)) and Southern Gothic, and look into the novel as a commentary on the racism and patriarchy of the Alabama in which Harper Lee grew up.
This episode of Crash Course Physics is supported by Prudential. Go to www.raceforretirement.com to learn how, if you start saving today, you can continue to enjoy the things you love tomorrow.
So we've all heard of relativity, right? But... what is relativity? And how does it relate to light? And motion? In this episode of Crash Course Physics, Shini talks to us about perspective, observation, and how relativity is REALLY weird!
Want more Crash Course in person? We'll be at NerdCon: Nerdfighteria in Boston on February 25th and 26th! For more information, go to http://www.nerdconnerdfighteria.com/
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