Top Vídeos
We all belong to the only group of hominins on the planet today. But we weren’t always alone. 100,000 years ago, Eurasia was home to other hominin species, some of which we know our ancestors met, and spent some quality time with.
Thanks to Julio Lacerda and Fabrizio de Rossi from Studio 252mya for their wonderful hominin illustrations. You can find more of their work here: https://252mya.com/
Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios
Super special thanks to the following Patreon patrons for helping make Eons possible:
Katie Fichtner, Anthony Callaghan, MissyElliottSmith, The Scintillating Spencer, AA, Zachary Spencer, Stefan Weber, Ilya Murashov, Charles Kahle, Robert Amling, Po Foon Kwong, Larry Wilson, Merri Snaidman, John Vanek, Neil H. Gray, Esmeralda Rupp-Spangle, Gregory Donovan, الخليفي سلطان, Gabriel Cortez, Marcus Lejon, Robert Arévalo, Robert Hill, Todd Dittman, Betsy Radley, PS, Philip Slingerland, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Daisuke Goto, Hubert Rady, Gregory Kintz, Tyson Cleary, Chandler Bass, Joao Ascensao, Tsee Lee, Sarah Fritts, Alex Yan
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References: https://docs.google.com/docume....nt/d/1h8iVAIugVPfxOc
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Check out Origin of Everything: https://www.youtube.com/channe....l/UCiB8h9jD2Mlxx96ZF
Today, our closest evolutionary relatives, the apes, live only in small pockets of Africa and Asia. But back in the Miocene epoch, apes occupied all of Europe. Why aren’t there wild apes in Europe today?
Special thanks to https://AfricanFossils.org for allowing us to use their images of Proconsul and Ekembo fossils.
Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios
Super special thanks to the following Patreon patrons for helping make Eons possible:
Katie Fichtner, Anthony Callaghan, Neil H. Gray, Marilyn Wolmart, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, سلطان الخليفي, Gabriel Cortez, Marcus Lejon, Anel Salas, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Sapjes, Daisuke Goto, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Jacob Gerke, Alex Yan
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References:
https://anthropology.utoronto.....ca/Faculty/Begun/beg
https://www.nature.com/scitabl....e/knowledge/library/
http://humanorigins.si.edu/res....earch/climate-and-hu
http://johnhawks.net/weblog/fo....ssils/miocene/graeco
https://news.google.com/newspapers?id=qBoqAAAAIBAJ&sjid=oyYEAAAAIBAJ&pg=2472,5867929&dq=oreopithecus&hl=en
https://www.smithsonianmag.com..../science-nature/huma
http://europepmc.org/abstract/MED/14529649
https://www.ncbi.nlm.nih.gov/pubmed/23280922
http://science.sciencemag.org/....content/350/6260/aab
https://www.ncbi.nlm.nih.gov/pubmed/28012461
https://www.nature.com/articles/382349a0
https://anthropology.utoronto.....ca/Faculty/Begun/han
https://anthropology.utoronto.....ca/Faculty/Begun/cra
http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S0038-23532017000700003
https://journals.plos.org/plos....one/article?id=10.13
https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC30783
https://www.sciencedirect.com/....science/article/pii/
https://www.ncbi.nlm.nih.gov/pubmed/24242778
https://journals.plos.org/plos....one/article?id=10.13
https://www.sajs.co.za/article/view/5149
http://science.sciencemag.org/content/327/5965/532
https://pubs.geoscienceworld.o....rg/gsa/geology/artic
https://pdfs.semanticscholar.o....rg/88f2/1ff1b2196d32
http://www.bioone.org/doi/abs/....10.2110/palo.2004.p0
http://sciencepress.mnhn.fr/en..../periodiques/geodive
https://www.sciencedirect.com/....science/article/pii/
https://www.ncbi.nlm.nih.gov/pubmed/26932906
https://www.ncbi.nlm.nih.gov/pubmed/12069506
https://www.sciencedirect.com/....science/article/pii/
https://www.ncbi.nlm.nih.gov/pubmed/23473739
https://www.ncbi.nlm.nih.gov/pubmed/11333976
For more than 10 million years, Megalodon was at the top of its game as the oceans’ apex predator...until 2.6 million years ago, when it went extinct. So, what happened to the largest shark in history?
Thanks as always to Nobumichi Tamura for allowing us to use his wonderful paleoart: http://spinops.blogspot.com/
And thanks to Joschua Knüppe and Studio 252mya for the illustration of Piscobalaena. You can find more of Joschua's work here: https://www.deviantart.com/hyrotrioskjan
Produced in collaboration with PBS Digital Studios: http://youtube.com/pbsdigitalstudios
Super special thanks to the following Patreon patrons for helping make Eons possible:
Katie Fichtner, Anthony Callaghan, Neil H. Gray, Marilyn Wolmart, Esmeralda Rupp-Spangle, Gregory Donovan, Ehit Dinesh Agarwal, سلطان الخليفي, Gabriel Cortez, Marcus Lejon, Anel Salas, Robert Arévalo, Robert Hill, Kelby Reid, Todd Dittman, Betsy Radley, PS, Colin Sylvester, Philip Slingerland, John Vanek, Jose Garcia, Eric Vonk, Tony Wamsley, Henrik Peteri, Jonathan Wright, Jon Monteiro, James Bording, Brad Nicholls, Miles Chaston, Michael McClellan, Jeff Graham, Maria Humphrey, Nathan Paskett, Connor Jensen, Sapjes, Daisuke Goto, Hubert Rady, Yuntao Zhou, Gregory Kintz, Tyson Cleary, Chandler Bass, Maly Lor, Joao Ascensao, Tsee Lee, Sarah Fritts, Ruben Winter, Ron Harvey Jr, Jacob Gerke, Alex Yan
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References:
https://www.researchgate.net/p....rofile/John_Barron3/
https://www.researchgate.net/p....ublication/312500230
https://journals.plos.org/plos....one/article?id=10.13
https://onlinelibrary.wiley.co....m/doi/abs/10.1111/j.
https://www.ncbi.nlm.nih.gov/pubmed/28586693
https://www.ncbi.nlm.nih.gov/pubmed/27381883
https://www.ncbi.nlm.nih.gov/p....mc/articles/PMC45415
https://www.ncbi.nlm.nih.gov/pubmed/29754903
http://sciencepress.mnhn.fr/si....tes/default/files/ar
https://www.ncbi.nlm.nih.gov/pubmed/27620830
https://onlinelibrary.wiley.co....m/doi/full/10.1111/j
https://www.nature.com/articles/nature09067
https://www.sciencedirect.com/....science/article/pii/
https://journals.plos.org/plos....one/article?id=10.13
http://science.sciencemag.org/content/327/5968/993
https://journals.plos.org/plos....one/article?id=10.13
https://www.nature.com/articles/ngeo2813
https://www.researchgate.net/p....ublication/233681377
http://ufdc.ufl.edu/UFE0042397/00001
Try CuriosityStream today: http://curiositystream.com/eons
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In which John Green teaches you about the Cold War as it unfolded in Asia. As John pointed out last week, the Cold War was occasionally hot, and a lot of that heat was generated in Asia. This is starting to sound weird with the hot/cold thing, so let's just say that the United States struggle against communist expansion escalated to full-blown, boots on the ground war in Korea and Vietnam. In both of these cases, the United States sent soldiers to intervene in civil wars that it looked like communists might win. That's a bit of a simplification, but John will explain it all to you.
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. While The Vietnam War was happening very far away from home, it had a major impact on American soldiers and civilians: https://www.commonlit.org/text....s/introduction-to-th
Americans with televisions had the war broadcasted right into their living rooms, leading to an immense Vietnam War resistance effort: https://www.commonlit.org/text....s/resistance-to-the-
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Today we are introducing a new area of philosophy – philosophy of religion. We are starting this unit off with Anselm’s argument for God’s existence, while also considering objections to that argument.
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“That’s a Neigh” David Goehring https://www.flickr.com/photos/carbonnyc/8757020626
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Hank takes you on a tour of your two-part autonomic nervous system. This episode explains how your sympathetic nervous system and parasympathetic nervous system work together as foils, balancing each other out. Their key anatomical differences - where nerve fibers originate and where their ganglia are located - drive their distinct anatomical functions, making your sympathetic nervous system the "fight or flight" while your parasympathetic nervous system is for "resting and digesting."
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Table of Contents
The Basic Two-Part System of the Autonomic Nervous System 0:48
Sympathetic Nervous System 2:33
Parasympathetic Nervous System 2:54
Their Nerve Fibers Originate in Different Parts of the Body 3:22
Sympathetic Ganglia Are Close to the Spinal Cord 4:36
Parasympathetic Ganglia Are Close to Their Effectors 4:59
***
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FROM: She who gave you life!
You, like the Mongols, will always be the exception.
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So, who was this Presocrates guy? Just kidding!
Long ago, some philosophers worked very hard to separate myths from what they actually knew about nature.
Thales theorized that everything in the world is made of water. Pythagoras was a mathematical-mystical vegetarian. And Democritus, we all know and love as the Atom Guy…
Meet the Presocratics!
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Hank talks about population genetics, which helps to explain the evolution of populations over time by combing the principles of Mendel and Darwin, and by means of the Hardy-Weinberg equation.
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References for this episode can be found in the Google document here: http://dft.ba/-2HbN
Table of Contents:
1. Population Genetics 1:05
2. Population 1:14
3. Allele Frequency 1:41
4. 5 Factors 1:58
a) Natural Selection 2:12
b) Natural Selection/Random Mating 2:27
c) Mutation 3:18
d) Genetic Drift 3:49
e) Gene Flow 4:05
5. Hardy-Weinberg Principle 4:45
6. Hardy-Weinberg Equilibrium 5:15
7. Hardy-Weinberg Equation 6:18
gregor mendel, heredity, genetics, charles darwin, natural selection, evolution, offspring, population genetics, species, population, generation, allele frequency, allele, selective pressure, sexual selection, non-random mating, preferred traits, fitness, mutation, DNA, genetic drift, chance, gene flow, immigration, emigration, godfrey hardy, wilhelm weinberg, hardy-weinberg equation, hardy-weinberg equilibrium, phenotype, genotype, earwax, mendelian trait, homozygous, heterozygous, evolutionary biology
This video contains the following sound from Freesound.org:
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In which John Green teaches you about the fall of the Roman Empire, which happened considerably later than you may have been told. While the Western Roman Empire fell to barbarians in 476 CE, the Byzantines in Constantinople continued the Eastern Empire nicely, calling themselves Romans for a further 1000 years. Find out what Justinian and the rest of the Byzantine emperors were up to over there, and how the Roman Empire dragged out its famous Decline well into medieval times. In addition to all this, you'll learn about ancient sports riots and hipster barbarians, too.
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Metabolism is a complex process that has a lot more going on than personal trainers and commercials might have you believe. Today we are exploring some of its key parts, including vital nutrients -- such as water, vitamins, minerals, carbs, fats, and proteins -- as well as how anabolic reactions build structures and require energy, while catabolic reactions tear things apart and release energy.
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--
Table of Contents
Water, Vitamins, Minerals, Carbs, Fats and Proteins 3:47
Anabolic Reactions Build Structures and Require Energy 2:59
Catabolic Reactions Tear Things Apart and Release Energy 3:17
Metabolism 2:30
***
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In this episode of Crash Course Chemistry, Hank discusses what Molecules actually look like and why, some quantum-mechanical three dimensional wave functions are explored, he touches on hybridization, and delves into sigma and pi bonds.
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Table of Contents
Molecules: Clumpy Globs... 0:18
Quantum-Mechanical Three-Dimensional Wave Functions 3:06
S & P Orbital Hybridization 5:27
Sigma & Pi Bonds 7:32
Hybridized Orbitals 5:52
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•••SUBBABLE MESSAGE•••
TO : Phoebe and James McMullan
FROM : Dad
Continue being awesome Phoebe & James from John & Hank!
***
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***
Today on Crash Course Anatomy & Physiology, Hank breaks down the parts and functions of one of your body's unsung heroes: your epithelial tissue.
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Table of Contents:
Epithelial Tissue Creates Inner & Outer Boundaries 2:19.3
Layering: Simple or Stratefied 5:26
Shape: Squamous, Cuboidal, or Columnar 3:34.5
Epithelial Cells Are Polar 7:17.4
Apical & Basal Sides 7:22
Selectively Permeable 7:43
Glandular Epithelial Tissue Forms Endocrine & Exocrine Glands 8:20.3
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The majority of the universe is made up of a currently mysterious entity that pervades space: dark energy. We don’t know exactly what it is, but we do know that dark energy accelerates the expansion of space. We think this means the Universe will expand forever, even as our view of it shrinks while space expands faster all the time.
Crash Course Astronomy Poster: http://store.dftba.com/product....s/crashcourse-astron
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GEOMETRY OF THE UNIVERSE RESOURCES
Geometry:
http://abyss.uoregon.edu/~js/c....osmo/lectures/lec15.
http://starchild.gsfc.nasa.gov..../docs/StarChild/ques
Expanding faster than light:
http://curious.astro.cornell.e....du/legal-information
General expansion:
https://en.wikipedia.org/wiki/....Metric_expansion_of_
--
Table of Contents
Majority of the Universe is Made of Dark Energy 4:35
Dark Energy Accelerates the Expansion of Space 3:42
We Think The Universe Will Expand Forever 5:20
--
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--
PHOTOS/VIDEOS
The Big Bang http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1 [credit: NASA]
Collision Scenario for Milky Way and Andromeda Galaxy Encounter http://www.nasa.gov/images/con....tent/654284main_i122 [credit: NASA; ESA; A. Feild and R. van der Marel, STScI]
Artist's impression of vampire star http://www.spacetelescope.org/videos/astro_bn/ [credit: ESO/M. Kornmesser]
Host Galaxies of Distant Supernovae http://www.nasa.gov/sites/defa....ult/files/images/593 [credit: NASA, ESA, and A. Riess (STScl)]
Dark Energy Expands the Universe http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1 [credit: NASA]
Expanding Universe http://www.spacetelescope.org/....videos/hst15_expandi [credit: ESA/Hubble (M. Kornmesser & L. L. Christensen)]
Hubble Ultra Deep Field 2014 http://hubblesite.org/newscent....er/archive/releases/ [credit: NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)]
Last week we introduced Thomas Aquinas’s four cosmological arguments for the existence of god; today we introduce his fifth argument: the teleological argument, and the ensuing dialogue it initiated.
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Bokeh Spiral by Eric Wüstenhagen: https://www.flickr.com/photos/eriwst/2987739376
Gusano alambre (wireworms) by jacinta lluch valero: https://www.flickr.com/photos/....70626035@N00/8817671
Experimental by Peter Klashorst: https://commons.wikimedia.org/....wiki/File:Baby_playi
Flightless Cormorant by Mike Weston: https://www.flickr.com/photos/mikeweston/331214460
All other images via Wikimedia Commons, licensed under Creative Commons by 4.0: https://creativecommons.org/licenses/by/4.0/
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Today Phil explores the world of tides! What is the relationship between tides and gravity? How do planets and their moons become tidally locked? What would happen if you were 300km tall? Important questions.
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Gravity Over Distance 0:44
Tidal Force Parameters 1:35
Battle of the Bulges 2:55
Tidal Lock 6:17
--
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--
PHOTO/VIDEO CREDITS
Photo & video credit: "NASA's Scientific Visualization Studio"
http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=4 Photo credit: "NASA's Scientific Visualization Studio"
https://www.flickr.com/photos/....gsfc/8556665115/in/p
http://svs.gsfc.nasa.gov/cgi-b....in/details.cgi?aid=1
The Hopewell Rocks - https://www.youtube.com/watch?v=EnDJ6_XpGfo
