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admin
8 vistas · 6 años hace

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Continuing our look at Nuclear Chemistry, Hank takes this episode to talk about Fusion and Fission. What they mean, how they work, their positives, negatives, and dangers. Plus, E=mc2, Mass Defect, and Applications of Fission and Fusion in the real world!

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Table of Contents

E=mc2
Mass Defect
Fission vs. Fusion
Applications in the Real World

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13 vistas · 6 años hace

Hank veers away from human anatomy to teach us about the (mostly) single-celled organisms that make up two of the three taxonomic domains of life, and one of the four kingdoms: Archaea, Bacteria, and Protists. They are by far the most abundant organisms on Earth, and are our oldest, oddest relatives.

Crash Course World History is now available on DVD! http://dft.ba/-8bCC

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References for this episode can be found in the Google document here: http://dft.ba/-1EvY

Table of Contents
1) Archaea 03:23
a) Methanogens 04:02
b) Extremophiles 04:24

2) Bacteria 05:24:2
3) Gram Positive 06:50
a) Proteobacteria 07:15
b) Cyanobacteria 07:30
c) Spirochetes 07:42
d) Chlamydias 07:52

4) Protists 08:12
a) Protozoa 09:03
b) Algae 09:54
c) Slime Molds 11:13

crash course, biology, archaea, bacteria, protists, unicellular, life, origin, evolution, evolve, eukaryotic, prokaryotic, nucleus, cell membrane, cytoplasm, ribosome, DNA, chromosome, plasmid, extremophile, methanogen, hydrothermal vent, halophile, parasitic, antibiotic, immune system, horizontal gene transfer, diverse, gram staining, gram positive, proteobacteria, cyanobacteria, spirochete, chlamydia, protozoa, algae, dog vomit, slime mold, heterotrophic, flagella, cilia, amoeba, photosynthesis, diatom, sailor's eyeball, bubble algae, seaweed, green, red, brown Support CrashCourse on Subbable: http://subbable.com/crashcourse

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10 vistas · 6 años hace

Hank explains the extremely complex series of reactions whereby plants feed themselves on sunlight, carbon dioxide and water, and also create some by products we're pretty fond of as well.

Crash Course Biology is now available on DVD! http://dftba.com/product/1av/C....rashCourse-Biology-T

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This video uses sounds from Freesound.org, a list of which can be found, along with the CITATIONS for this episode, in the Google document here: http://dft.ba/-29ai

Table of Contents:
1) Water 1:16
2) Carbon Dioxide 1:32
3) Sunlight/Photons 1:43
4) Chloroplasts 1:57
5) Light Reaction/Light-Dependent 2:42
a. Photosystem II 3:33
b. Cytochrome Complex 5:54
c. ATP Synthase 6:16
d. Photosystem I 7:06
6) Dark Reactions/Light-Independent 7:55
a. Phase 1 - Carbon Fixation 8:50
b. Phase 2 - Reduction 11:31
c. Phase 3 - Regeneration 12:02

tags: photosynthesis, biology, science, crashcourse, plants, light, calvin cycle, respiration, water, carbon dioxide, sunlight, xylem, time lapse, stomata, chlorophyll, photon, plastid, chloroplast, oxygen, thylakoid, grana, lumen, stroma, chemistry, fusion, photoexcitation, photosystem II, electron transport chain, protein, cytochrome complex, carbon fixation, rubisco, phosphoglycolate, reduction, regeneration, glyceraldehyde 3-phosphate, G3P, glucose, cellulose, starch, life Support CrashCourse on Subbable: http://subbable.com/crashcourse

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7 vistas · 6 años hace

This week, we're starting our discussion of Mythical Creatures with the WORST creatures. Monsters. What makes a monster monstrous though? Mike Rugnetta will guide you through the fine line between a magical creature and a monster. Spoiler alert: like 60% of the time, the difference is that monsters eat people. We'll talk about sea monsters, Sphinxes, and take an elongated look directly into the Canadian face of horror, the Wendigo.

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Thanks to the following Patrons for their generous monthly contributions that help keep Crash Course free for everyone forever:

Mark Brouwer, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Jessica Wode, Cami Wilson, Eric Prestemon, Evren Türkmenoğlu, Alexander Tamas, Justin Zingsheim, D.A. Noe, Shawn Arnold, Tom Trval, mark austin, Ruth Perez, Malcolm Callis, Kathrin Janßen, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, Nathan Taylor, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Jason A Saslow, Steve Marshall
--

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7 vistas · 6 años hace

Hank introduces us to one of the most diverse and important families in the tree of life - the vascular plants. These plants have found tremendous success and the their secret is also their defining trait: conductive tissues that can take food and water from one part of a plant to another part. Though it sounds simple, the ability to move nutrients and water from one part of an organism to another was a evolutionary breakthrough for vascular plants, allowing them to grow exponentially larger, store food for lean times, and develop features that allowed them to spread farther and faster. Plants dominated the earth long before animals even showed up, and even today hold the world records for the largest, most massive, and oldest organisms on the planet.

Crash Course Biology is now available on DVD! http://dft.ba/-8bCC

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Table of Contents
1) 3 Tissue Types 02:37
2) Primary Growth 03:04
3) Secondary Growth 03:28
4) Dermal Tissue 04:47
a) Epidermis 04:54
5) Parenchyma Cells 05:39
6) Vascular Tissue 05:58
7) Xylem 05:58
8) Collenchyma 07:10
9) Sclerenchyma 07:35
10) Ground Tissue 08:25
a) Mesophyll 08:17
b) Photosynthesis 08:47
11) Phloem 09:54

References
http://www.uic.edu/classes/bio....s/bios100/lecturesf0
http://www.deseretnews.com/art....icle/700071982/Centr
http://www.popsci.com/science/....article/2012-02/2000


crashcourse, biology, vascular plant, plant, successful, diversity, diverse, conductive tissue, evolution, growth, largest, most massive, oldest, dermal tissue, vascular tissue, ground tissue, photosynthesis, sprout, germination, primary growth, herbaceous, secondary growth, woody tissue, organ, root, stem, meristem, leaf, epidermis, cuticle, trichomes, root hairs, parenchyma, cortex, xylem, evapotranspiration, collenchyma, sclerenchyma, lignin, mesophyll, chloroplasts, stomata, phloem, sieve cells, sieve-tube elements, internal pressure, diffusion Support CrashCourse on Subbable: http://subbable.com/crashcourse

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3 vistas · 6 años hace

Pitching your movie to people can be hard. A studio, a friend, your mom... each of these entities will have different stressed and give you different results. But, what's important in a pitch? And what happens after the pitch? How do you get your movie ready to film? In this episode of Crash Course Film Production, Lily gives us some advice on both.

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

The Latest from PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

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6 vistas · 6 años hace

Hank tells us the background story and explains the importance of the science of classifying living things, also known as taxonomy.

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/-2L2C

Table of Contents
1) Taxonomy 0:00
2) Phylogenetic Tree 1:24
3) Biolography 2:26
4) Analogous/Homoplasic Traits 3:48
5) Homologous Traits 4:03
6) Taxa & Binomial Nomenclature 4:56
7) Domains 5:48
a) Bateria 6:04
b) Archaea 6:44
c) Eukarya / 4 Kingdoms 6:54
-Plantae 7:56
-Protista 8:23
-Fungi 8:56
-Animalia 9:31

taxonomy, classification, classifying, evolution, filing, science, biology, life, organism, relationship, ancestor, ancestry, evolutionary tree, phylogenetic tree, tree of life, biolography, carl von linnaeus, linnaeus, botanist, botanical name, morphology, homologous traits, systema naturae, taxa, groups, kingdom, phylum, class, order, family, genus, species, binomial nomenclature, latin, domain, archaea, eukarya, division, autotrophs, heterotrophs, protist, fungi, animalia, animal, cat, kitty Support CrashCourse on Subbable: http://subbable.com/crashcourse

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11 vistas · 6 años hace

Hank begins a series of videos on organ systems with a look at the nervous system and all of the things that it is responsible for in the body.

Crash Course Biology is now available on DVD! http://dft.ba/-8bCC

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References for this episode can be found in the Google document here: http://dft.ba/-3a36 Support CrashCourse on Subbable: http://subbable.com/crashcourse

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5 vistas · 6 años hace

I'm sure you've heard of Isaac Newton and maybe of some of his laws. Like, that thing about "equal and opposite reactions" and such. But what do his laws mean? And how do they help us understand the world around us? In this episode of Crash Course Physics, Shini talks to us about just that.

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

Help PBSDS win a Webby Award by voting here: https://pv.webbyawards.com/201....6/online-film-video/

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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8 vistas · 6 años hace

This week Craig Benzine takes a first look at the judicial branch. It's pretty easy to forget that the courts, and the laws that come out of them, affect our lives on a daily basis. But how exactly these decisions are made and where each law's jurisdiction starts and ends can get pretty complicated. So complicated in fact that you may want to smash something. But don't worry, Craig will clear the way.

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

Support is provided by Voqal: http://www.voqal.org

All Flickr.com images are licensed under Creative Commons by Attribution 2.0
http://creativecommons.org/lic....enses/by/2.0/legalco

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8 vistas · 6 años hace

Hank gets real with us in a discussion of evolution - it's a thing, not a debate. Gene distribution changes over time, across successive generations, to give rise to diversity at every level of biological organization.

Crash Course Biology is now available on DVD! http://dft.ba/-8css

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Table of Contents
1) The Theory of Evolution 1:49
2) Fossils 2:42
3) Homologous Structures 4:36
4) Biogeography 7:02
5) Direct Observation 8:52

References for this episode can be found in the Google document here: http://dft.ba/-2Oyu

evolution, theory, biology, science, crashcourse, genetics, gene, facts, fossil, fossil record, dinosaur, extinct, extinction, organism, dorudon, rodhocetus, vestigial, structure, similarity, homologous structure, related, relationship, morganucodon, fore limb, hind limb, vertebrate, molecule, DNA, RNA, chimpanzee, fruit fly, biogeography, marsupial, finches, direct observation, drug resistance, resistance, selective pressure, italian wall lizard Support CrashCourse on Subbable: http://subbable.com/crashcourse

admin
8 vistas · 6 años hace

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.

Crash Course World History is now available on DVD! Visit http://dft.ba/-CCWHDVD to buy a set for your home or classroom.

In which John Green teaches you about what is often called the Reagan Era. Mainly, it covers the eight years during which a former actor who had also been governor of the state of California was president of the United States. John will teach you about Reagan's election victory over the hapless Jimmy Carter, tax cuts, Reagan's Economic Bill of Rights, union busting, and the Iran-Contra among other things. Learn about Reagan's domestic and foreign policy initiatives, and even a little about Bonzo the Chimp.

Hey teachers and students - Check out CommonLit's free collection of reading passages and curriculum resources to learn more about the events of this episode. Ronald Reagan signalled a shift to conservative values on the role of government, discussed in his "Time for Choosing" Speech: https://www.commonlit.org/text....s/from-a-time-for-ch
America turned to President Reagan for comfort in times of tragedy, including following the Challenger Disaster: https://www.commonlit.org/text....s/ronald-reagan-on-t

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8 vistas · 6 años hace

As the Roman Empire fell, so did the theater. If there's anyone who hates theater and actors more than Romans, it's early Christians. As Christianity ascended in the west, theater declined. But, fear not. This isn't the end of the series. Theater would be back, and in the best subversive theater-y fashion, it would return via the Catholic mass!

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 Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, Robert Kunz, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, D.A. Noe, Shawn Arnold, mark austin, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft, Steve Marshall
--

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13 vistas · 6 años hace

Cycles are a big deal in engineering. Today we’ll explain what they are and how they’re used in heat engines, refrigerators, and heat pumps. We’ll also discuss phase diagrams and the power of using renewable energy resources

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

RESOURCES:
Çengel, Yunus A., and Michael A. Boles. Thermodynamics: An Engineering Approach. 8th ed., McGraw-Hill Education.
http://hyperphysics.phy-astr.g....su.edu/hbase/thermo/
https://www.livescience.com/57....797-refrigerator-his
https://www.windows2universe.o....rg/earth/climate/cyc
https://en.oxforddictionaries.com/definition/cycle
http://www.historyofrefrigerat....ion.com/refrigeratio
https://www.asme.org/engineeri....ng-topics/articles/m
http://chemed.chem.purdue.edu/....genchem/topicreview/
https://practicalaction.org/zeer-pot-fridge
https://gizmodo.com/5935104/ho....w-to-make-an-electri
https://www.nwwindandsolar.com..../solar-power-in-seat
https://www.scientificamerican.....com/article/how-doe
http://www.qrg.northwestern.ed....u/thermo/design-libr
http://professorglobal.cbpf.br..../MathMatters/AirCond

***

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 Brouwer, Erika & Alexa Saur Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Mayumi Maeda, Kathy & Tim Philip, Jirat, Eric Kitchen, Ian Dundore, Chris Peters
--

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4 vistas · 6 años hace

Engineering, like life, could really use a lot more cheese. This week we are looking at a cheese factory in Toronto and what it can teach us about process control systems. We’ll explore feedforward and feedback systems, and see how integrating them both with the final check of cascade control creates a system made to handle uncertainty the world throws its way.

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

Global Weirding with Katharine Hayhoe: https://www.youtube.com/channe....l/UCi6RkdaEqgRVKi3Az

***

RESOURCES:
https://www.improbable.com/201....8/01/10/the-100th-bi
http://www.abc.net.au/science/....k2/trek/4wd/crasht.h
http://www.proflow.ca/case-stu....dies/process-control
https://www.explainthatstuff.c....om/howtoiletswork.ht
https://www.marineinsight.com/....tech/heat-exchangers
https://www.controleng.com/sin....gle-article/applying

***

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:

Sam Buck, Mark Brouwer, James Hughes, Kenneth F Penttinen, Trevin Beattie, Satya Ridhima Parvathaneni, Erika & Alexa Saur, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, D.A. Noe, Shawn Arnold, Malcolm Callis, Advait Shinde, William McGraw, Andrei Krishkevich, Rachel Bright, Mayumi Maeda, Kathy & Tim Philip, Jirat, Ian Dundore
--

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admin
5 vistas · 6 años hace

Today Shini explains the law of conservation, beginning with simple, steady-state systems. We’ll discuss conversion and yield, accumulation, and how generation and consumption can affect how much accumulation there is in a system.

This episode is sponsored by CuriosityStream: http://curiositystream.com/crashcourse

Crash Course Engineering is produced in association with PBS Digital Studios: https://www.youtube.com/playli....st?list=PL1mtdjDVOoO

***

RESOURCES:
http://www.keenovens.com/artic....les/steel-furnance.h
http://www.madehow.com/Volume-....1/Stainless-Steel.ht
https://www.nps.gov/stli/faqs.htm
https://www.nps.gov/stli/learn..../historyculture/plac
https://www.scientificamerican.....com/article/why-doe
https://wonderopolis.org/wonde....r/why-do-some-things
https://www.engineersedge.com/....thermodynamics/stead
https://www.britannica.com/sci....ence/conservation-la
http://www.keenovens.com/artic....les/steel-furnance.h
http://discoverykids.com/artic....les/how-is-steel-mad
https://www.britannica.com/tec....hnology/steel/Histor
http://www.explainthatstuff.com/ironsteel.html
https://agt.si.edu/cultural_hi....story/turkey/bronze-
https://www.britannica.com/tec....hnology/Bessemer-pro
https://www.britannica.com/bio....graphy/Henry-Besseme
https://en.wikibooks.org/wiki/....Introduction_to_Chem
https://en.wikibooks.org/wiki/....Introduction_to_Chem
https://www.foodnavigator-asia.....com/Article/2012/05
http://www.industryweek.com/co....mpanies-amp-executiv

***

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 Brouwer, Glenn Elliott, Justin Zingsheim, Jessica Wode, Eric Prestemon, Kathrin Benoit, Tom Trval, Jason Saslow, Nathan Taylor, Divonne Holmes à Court, Brian Thomas Gossett, Khaled El Shalakany, Indika Siriwardena, SR Foxley, Sam Ferguson, Yasenia Cruz, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, D.A. Noe, Shawn Arnold, Ruth Perez, Malcolm Callis, Ken Penttinen, Advait Shinde, Cody Carpenter, Annamaria Herrera, William McGraw, Bader AlGhamdi, Vaso, Melissa Briski, Joey Quek, Andrei Krishkevich, Rachel Bright, Alex S, Mayumi Maeda, Kathy & Tim Philip, Montather, Jirat, Eric Kitchen, Moritz Schmidt, Ian Dundore, Chris Peters, Sandra Aft
--

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7 vistas · 6 años hace

Is Immigration good or bad? Immigration is a touchy subject in the United States. The 2016 election has been filled with debate about the subject, and both proponents and opponents have lots of reasons for their stance. But, this is a show about economics, and when it comes to the effects of immigration on economies, there is actually a lot of consensus. It turns out, immigration is economically beneficial.

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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6 vistas · 6 años hace

Today, Craig is going to talk about employment discrimination, and we're going to focus primarily on women in the workforce. Discrimination against women tends to be handled somewhat differently in the courts as they are not a minority. Even so, the courts need a method for challenging issues to help further important government interests - this is called intermediate scrutiny. (If you'll remember, strict scrutiny is the most rigorous form of judicial review and rational basis review is the least rigorous.) So we'll talk about things like disparate impact and sexual harassment in the workplace and how these cases are handled in the courts.

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

Support is provided by Voqal: http://www.voqal.org

All attributed images are licensed under Creative Commons by Attribution 2.0

https://creativecommons.org/licenses/...

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admin
7 vistas · 6 años hace

Hank and John spend an hour together hanging out live and answering viewer questions. Only a couple of technical problems. :) Support CrashCourse on Subbable: http://subbable.com/crashcourse

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9 vistas · 6 años hace

Today we’re looking at how society becomes stratified along gender lines. We’ll discuss Raewyn Connell’s concept of hegemonic masculinities and emphasized femininities. We’ll explore gender socialization in the home, media, and schools. Finally, we’ll explain how gender stratification results in different outcomes by gender in education, occupations, earnings, and criminal activity.

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References:
Sociology by John J. Macionis, 15th edition (2014)

American Time Use Survey 2011- 2015 https://www.bls.gov/tus/tables/a6_1115.pdf

Hill J, Ottem R, DeRoche J, Owens C., U.S. Department of Education. 'Trends in Public and Private School Principal Demographics and Qualifications' (2016) https://nces.ed.gov/pubs2016/2016189.pdf

Glass, Thomas E., School Superintendents Association, 'Where Are All the Women Superintendents?' http://aasa.org/SchoolAdminist....ratorArticle.aspx?id

Pew Research Center tabulations of Current Population Survey data http://www.pewresearch.org/fac....t-tank/2016/07/01/ra

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