The Romans developed a lot of infrastructure like roads and aqueducts to both help their cities flourish and to... you know... be better at war. But the interesting thing about Roman Engineering is how it was almost all focused on Techne and not Episteme. In this episode of Crash Course History of Science, Hank takes us down the road of road building, domes, and some really cool cement.

***

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Writing research papers is an essential skill in your career as a student, and this week we’re going to help you do that like a pro. From figuring out where to begin, to finding the best systems, to breaking out of “research recursion system” (maybe just figuring out what that means), we’ve got you covered.

Crash Course is made with Adobe Creative Cloud. Get a free trial here: https://www.adobe.com/creative....cloud/catalog/deskto

Resources:

How to Write a Great Research Paper by Simon Peyton Jones: https://www.youtube.com/watch?v=g3dkRsTqdDA
How to Become a Straight-A Student by Cal Newport: https://www.goodreads.com/book..../show/253203.How_to_
Close Reading and Research: https://collegeinfogeek.com/wr....iting-close-reading-
Writing and Editing Tips: https://collegeinfogeek.com/es....say-writing-and-edit

***

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Mark Brouwer, Bob Kunz, mark austin, William McGraw, Ruth Perez, Jason A Saslow, D.A. Noe, Shawn Arnold, Eric Prestemon, Malcolm Callis, Advait Shinde, Thomas Frank, Rachel Bright, Khaled El Shalakany, Ian Dundore, Tim Curwick, Ken Penttinen, Indika Siriwardena, Alexander Tamas, Caleb Weeks, Kathrin Janßen, Nathan Taylor, Andrei Krishkevich, Brian Thomas Gossett, Chris Peters, Kathy & Tim Philip, Mayumi Maeda, Eric Kitchen, SR Foxley, Evren Türkmenoğlu, Tom Trval, Cami Wilson, Justin Zingsheim, Moritz Schmidt, Jessica Wode, Daniel Baulig, Jirat
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In our first episode of Crash Course Engineering, Shini explains what engineering is, and gives a brief overview of its four main branches (civil, mechanical, electrical, and chemical) as well as a look at some of the other fields of engineering.

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

***

RESOURCES:
https://www.britannica.com/technology/engineering
http://www.dictionary.com/browse/engineer
http://enacademic.com/dic.nsf/enwiki/23915
https://www.britannica.com/tec....hnology/military-eng
https://www.britannica.com/tec....hnology/civil-engine
https://www.bls.gov/ooh/archit....ecture-and-engineeri
http://me.columbia.edu/what-mechanical-engineering
https://www.britannica.com/tec....hnology/history-of-t
https://www.livescience.com/44....186-who-invented-the
https://www.britannica.com/technology/steam-engine
https://www.acs.org/content/ac....s/en/careers/college
https://www.livescience.com/47....499-what-is-engineer
https://www.livescience.com/48....134-what-is-chemical
https://www.livescience.com/47....702-aerospace-engine
https://www.livescience.com/47....749-nuclear-engineer
https://www.livescience.com/48....001-biomedical-engin
http://time.com/money/4920319/....the-1-college-major-
https://www.forbes.com/sites/k....arstenstrauss/2017/0
“The Story of Engineering” by James Kip Finch. Anchor Books, 1960.

***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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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, 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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Propaganda! Misinformation! Disinformation! Today we’re talking about the dark – or, shall we say, darkER – side of media. Understanding these media bogeymen is essential to being a more media literate citizen.

***

Resources:

The Persistent Mystery: How Many Died in 1989? https://www.nytimes.com/1999/0....6/04/world/the-persi

The Media Was Always Bad at Reporting Breaking News, a Brief History https://www.theatlantic.com/na....tional/archive/2013/

How To Handle Rumors: http://egap.org/content/brief-31-how-handle-rumors

The Macedonian Teens Who Mastered Fake News https://www.wired.com/2017/02/....veles-macedonia-fake

We Tracked Down A Fake-News Creator In The Suburbs. Here's What We Learned https://www.npr.org/sections/a....lltechconsidered/201

Evaluating Information: The Cornerstone of Civic Online Reasoning https://stacks.stanford.edu/fi....le/druid:fv751yt5934

Social Clicks: What and Who Gets Read on Twitter? https://hal.inria.fr/hal-01281190

59 Percent Of You Will Share This Article Without Even Reading It https://www.forbes.com/sites/j....aysondemers/2016/08/

An Exercise to Sift for Sources Amid a Blitz of Fake News https://dotearth.blogs.nytimes.....com/2016/11/24/an-e

***

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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, 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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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/

In the early 1800s, Michael Faraday showed us how a changing magnetic field induces an electromotive force, or emf, resulting in an electric current. He also found that electric fields sometimes act like magnetic fields, and developed equations to calculate the forces exerted by both. In the mid-1800s, Scottish physicist James Maxwell thought something interesting was going on there, too. So he decided to assemble a set of equations that held true for all electromagnetic interactions. In this episode of Crash Course Physics, Shini talks to us about Maxwell's Equations and how important they are to our understanding of Physics.


***

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The Latest from PBS Digital Studios: https://www.youtube.com/playlist?list...

--

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

--

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Crash Course World History is now available on DVD! Visit http://store.dftba.com/product....s/crashcourse-world- to buy a set for your home or classroom.

In which John Green teaches you about capitalism and socialism in a way that is sure to please commenters from both sides of the debate. Learn how capitalism arose from the industrial revolution, and then gave rise to socialism. Learn about how we got from the British East India Company to iPhones and consumer culture in just a couple of hundred years. Stops along the way include the rise of industrial capitalism, mass production, disgruntled workers, Karl Marx, and the Socialist Beard. The socialist reactions to the ills of capitalism are covered as well, and John discusses some of the ideas of Karl Marx, and how they've been implemented or ignored in various socialist states. Plus, there are robots!

Resources:

The Relentless Revolution by Joyce Appelby: http://dft.ba/-appelby

The Marx-Engels Reader: http://dft.ba/-marxengels

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Today we kick off Crash Course Sociology by explaining what exactly sociology is. We’ll introduce the sociological perspective and discuss how sociology differentiates itself from the other social sciences. We’ll also explore what sociology can do, and how a concern with social problems was at the center of sociology's beginnings.

Crash Course is made with Adobe Creative Cloud. Get a free trial here: https://www.adobe.com/creativecloud.html

***

Marriage Equality Decision Day Rally photo by Elvert Barnes: https://www.flickr.com/photos/....perspective/18997209

***

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Mark, Les Aker, Robert Kunz, William McGraw, Jeffrey Thompson, Jason A Saslow, Rizwan Kassim, Eric Prestemon, Malcolm Callis, Steve Marshall, Advait Shinde, Rachel Bright, Kyle Anderson, Ian Dundore, Tim Curwick, Ken Penttinen, Caleb Weeks, Kathrin Janßen, Nathan Taylor, Yana Leonor, Andrei Krishkevich, Brian Thomas Gossett, Chris Peters, Kathy & Tim Philip, Mayumi Maeda, Eric Kitchen, SR Foxley, Justin Zingsheim, Andrea Bareis, Moritz Schmidt, Bader AlGhamdi, Jessica Wode, Daniel Baulig, Jirat

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This week, Stan Muller launches the Crash Course Intellectual Property mini-series. So, what is intellectual property, and why are we teaching it? Well, intellectual property is about ideas and their ownership, and it's basically about the rights of creators to make money from their work. Intellectual property is so pervasive in today's world, we thought you ought to know a little bit about it. We're going to discuss the three major elements of IP: Copyright, Patents, and Trademarks.

ALSO, A DISCLAIMER:
he views expressed in this video do not necessarily reflect those of the United States Copyright Office, the Library of Congress, or the United States Government.
The information in this video is distributed on "As Is" basis, without warranty. While precaution has been taken in the preparation of the video, the author shall not have any liability to any person or entity with respect to any loss or damage caused or alleged to be caused directly or indirectly by any information contained in the work.
This video is intended for educational purposes only and is not intended to be, nor should it be construed as, legal advice. Intellectual property law is notoriously fact specific, and this video (or any other single resource) cannot substitute for expert guidance from qualified legal counsel. To obtain legal guidance relevant to your particular circumstances, you should consult a qualified lawyer properly licensed in your jurisdiction. You can contact your local bar association for assistance in finding such a lawyer in your area.

The Magic 8 Ball is a registered Trademark of Mattel

Citation 1: Brand, Stewart. Quote from speech given at first Hackers' Conference, 1984
Citation 2: Plato, Phaedrus. 390 BC p. 157

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Konradical the nonradical


TO: Everyone
FROM: Bob

You CAN'T be 'Based off' of anything! BASED ON!

TO: the world
FROM: denial

Nou Ani Anquietas. Hic Qua Videum.

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Cybersecurity is a set of techniques to protect the secrecy, integrity, and availability of computer systems and data against threats. In today’s episode, we’re going to unpack these three goals and talk through some strategies we use like passwords, biometrics, and access privileges to keep our information as secure, but also as accessible as possible. From massive Denial of Service, or DDos attacks, to malware and brute force password cracking there are a lot of ways for hackers to gain access to your data, so we’ll also discuss some strategies like creating strong passwords, and using 2-factor authentication, to keep your information safe.

Check out Computerphile’s wonderful video on how to choose a password!
https://www.youtube.com/watch?v=3NjQ9b3pgIg

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

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https://about.me/carrieannephilbin

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We talk a lot about Keynesian economics on this show, pretty much because the real world currently runs on Keynesian principles. That said, there are some other economic ideas out there, and today we're going to talk about a few of them. So, if you've been aching to hear about socialism, communism, the Chicago School, or the Austrian School, this episode is for you.

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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 order to understand the history of media literacy we have to go all the way back to straight up literacy. In the first half of our look at the history of media literacy, Jay takes us all the way back to Ancient Greece and forward through the printing press, newspapers, and Yellow Journalism.

***

Resources & References:

The Impact of the Printing Press http://courses.educ.ubc.ca/ete....c540/Sept04/arthurp/

Grandparents of Media Literacy https://www.grandparentsofmedi....aliteracy.com/grandp

Maine Explosion Caused by Bomb or Torpedo? https://digitalcollections.nyp....l.org/items/84ea964f

***

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Mark Brouwer, Justin Zingsheim, Nickie Miskell Jr., 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, Daniel Baulig, 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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Like Egypt, Sumer, and Mesoamerica, ancient China represents a hydraulic civilization—one that maintained its population by diverting rivers to aid in irrigation—and one that developed writing thousands of years ago. Today, we’re going to focus on the time of the Northern and Southern Song Dynasties, a time of great technical innovation. But, before we get to the Song, let’s take a tour through the ages and explore key elements of Chinese scientific culture.

***

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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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We’re beginning our engineering journey with a tour through the major branches. Today Shini explains the facets of civil engineering, including structural and construction engineering, city planning, transportation, and sanitation.

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

***

RESOURCES:
https://www.engineering.com/De....signerEdge/DesignerE
https://www.britannica.com/biography/Imhotep
https://www.livescience.com/23....050-step-pyramid-djo
http://www.thecivilengg.com/History.php
https://www.britannica.com/tec....hnology/aqueduct-eng
https://www.peabody.harvard.edu/node/2151
http://www.museumofthecity.org..../project/hippodamus-
http://classics.mit.edu/Aristo....tle/politics.2.two.h
https://www.ancient.eu/Roman_Engineering/
http://www.history.com/news/th....e-secrets-of-ancient
https://www.nachi.org/history-of-concrete.htm
https://www.britannica.com/biography/John-Smeaton
http://www.history.co.uk/biogr....aphies/joseph-bazalg
https://www.schnabel-eng.com/s....ervices/dam-engineer
https://usbr.gov/lc/hooverdam/faqs/powerfaq.html

***

Crash Course is on Patreon! You can support us directly by signing up at http://www.patreon.com/crashcourse

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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, 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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Today we’ll cover the fourth and final of our core disciplines of engineering: chemical engineering. We’ll talk about its history and evolution going from soda ash competitions to oil refineries and renewable energies. We’ll also discuss some newer and emerging fields like biotechnology and pharmaceuticals.

NOTE: This is a re-upload to correct an error at ~2:00

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

***

RESOURCES:
http://www.chemistryexplained.....com/Kr-Ma/Leblanc-Ni
https://www.keionline.org/book/prizes-lots-of-them
https://www.sciencehistory.org..../historical-profile/
http://www.world-petroleum.org..../edu/223-how-is-crud
https://www.thoughtco.com/hist....ory-of-gasoline-1991
https://www.britannica.com/tec....hnology/cracking-che
https://www.britannica.com/tec....hnology/petroleum-re
https://www.britannica.com/tec....hnology/chemical-eng
https://www.allaboutcareers.co....m/careers/career-pat
https://www.myklassroom.com/En....gineering-branches/2
https://www.impossiblefoods.com/burger/
https://www.eia.gov/energyexpl....ained/?page=biomass_
“Basic Principles and Calculations in Chemical Engineering” by David Mautner Himmelblau, James B. Riggs

***

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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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What is culture? How do we define it and how does it change? We’ll explore different categories of culture, like low culture, high culture, and sub-cultures. We'll also revisit our founding theories to consider both a structural functionalist and a conflict theory perspective on what cultures mean for society.

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***

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Mark, Les Aker, Bob Kunz, Mark Austin, William McGraw, Jeffrey Thompson, Ruth Perez, Jason A Saslow, Eric Prestemon, Malcolm Callis, Steve Marshall, Advait Shinde, Rachel Bright, Ian Dundore, Tim Curwick, Ken Penttinen, Dominic Dos Santos, Caleb Weeks, Frantic Gonzalez, Kathrin Janßen, Nathan Taylor, Yana Leonor, Andrei Krishkevich, Brian Thomas Gossett, Chris Peters, Kathy & Tim Philip, Mayumi Maeda, Eric Kitchen, SR Foxley, Tom Trval, Andrea Bareis, Moritz Schmidt, Jessica Wode, Daniel Baulig, Jirat
--

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First thing’s first: what is media literacy? In our first episode, Jay breaks this question down and explains how we’re going to use it to explore our media saturated world.

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Resources & References:

U.S. Adults Consume an Entire Hour More of Media Per Day Than They Did Just Last Year http://www.adweek.com/tv-video..../us-adults-consume-e

Landmark Report: U.S. Teens Use an Average of Nine Hours of Media Per Day, Tweens Use Six Hours https://www.commonsensemedia.o....rg/about-us/news/pre

NAMLE: Media Literacy Defined https://namle.net/publications..../media-literacy-defi

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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 Brouwer, Nickie Miskell Jr., 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, Daniel Baulig, Eric Koslow, Caleb Weeks, Tim Curwick, Evren Türkmenoğlu, Alexander Tamas, Justin Zingsheim, 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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Today we're going to introduce one of the most flexible statistical tools - the General Linear Model (or GLM). GLMs allow us to create many different models to help describe the world - you see them a lot in science, economics, and politics. Today we're going to build a hypothetical model to look at the relationship between likes and comments on a trending YouTube video using the Regression Model. We'll be introducing other popular models over the next few episodes.

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, 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, 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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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 a time of relative tumult in the United States, the 1960s. America was changing rapidly in the 1960s, and rights movements were at the forefront of those changes. Civil Rights were dominant, but the 60s also saw growth in the Women's Movement, the LGBT rights movement, the Latino rights movement, and the American Indian movement. Also, Americans began to pay a bit more attention to the environment. All this change happened against the backdrop of the Cold War and the Rise of Conservatism. It was just wild. John will teach you about sit-ins, Freedom Rides, The March on Washington, MLK, JFK, LBJ, and NOW. Man, that is a lot of initialisms. And one acronym.

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

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. Civil Rights stayed strong throughout the 1960s, beginning with the peaceful sit-in movement in 1960 in the South: https://www.commonlit.org/text....s/the-sit-in-movemen
The Civil Rights Movement reached a high point when Martin Luther King Jr. delivered his 1963 “I Have a Dream” Speech at the March on Washington: https://www.commonlit.org/texts/i-have-a-dream
After President Kennedy's assassination, President Johnson decided to promote Civil Rights as part of his Great Society program: https://www.commonlit.org/text....s/lyndon-baines-john
After Dr. Martin Luther King, Jr. was assassinated in 1968, the growing black power movement gained even more populairty: https://www.commonlit.org/text....s/empowering-the-bla

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Support Deep Look on Patreon!! https://www.patreon.com/deeplook

Scientists have used a high-speed camera to film hummingbirds' aerial acrobatics at 1000 frames per second. They can see, frame by frame, how neither wind nor rain stop these tiniest of birds from fueling up.

DEEP LOOK: a new ultra-HD (4K) short video series created by KQED San Francisco and presented by PBS Digital Studios. See the unseen at the very edge of our visible world. Get a new perspective on our place in the universe and meet extraordinary new friends. Explore big scientific mysteries by going incredibly small.

How do hummingbirds eat?

With spring in full bloom, hummingbirds can be spotted flitting from flower to flower and lapping up the sugary nectar inside. These tiniest of birds have the highest metabolism of any warm-blooded animal, requiring them to consume their own body weight in nectar each day to survive.

By comparison, if a 150-pound human had the metabolism of a hummingbird, he or she would need to consume the caloric equivalent of more than 300 hamburgers a day.

But it's not just an extreme appetite that sets hummingbirds apart from other birds. These avian acrobats are the only birds that can fly sideways, backwards and hover for long stretches of time. In fact, hovering is essential to hummingbirds' survival since they have to keep their long, thin beaks as steady as a surgeon's scalpel while probing flowers for nectar.

How do Hummingbirds fly?

Hummingbirds don't just hover to feed when the weather is nice. They have to keep hovering and feeding even if it's windy or raining, a remarkable feat considering most of these birds weigh less than a nickel.

More great Deep Look episodes:

Newt Sex: Buff Males! Writhing Females! Cannibalism!
https://www.youtube.com/watch?v=5m37QR_4XNY

Pygmy Seahorses: Masters of Camouflage
https://www.youtube.com/watch?v=Q3CtGoqz3ww

Banana Slugs: Secret of the Slime
https://youtu.be/mHvCQSGanJg

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See also another great video from the PBS Digital Studios!

Where Do Birds Go In Winter? - It's Okay to be Smart
https://www.youtube.com/watch?v=ds2XFvSQzBg

Read the extended article on how hummingbirds hover at KQED Science:

http://blogs.kqed.org/science/....2015/03/31/what-happ

SUBSCRIBE: http://goo.gl/8NwXqt

KQED Science: http://kqed.org/science

Funding for Deep Look is provided in part by PBS Digital Studios and the John S. and James L. Knight Foundation. Deep Look is a project of KQED Science, which is supported by HopeLab, The David B. Gold Foundation; S. D. Bechtel, Jr. Foundation; The Dirk and Charlene Kabcenell Foundation; The Vadasz Family Foundation; Smart Family Foundation and the members of KQED.
#deeplook #hummingbirds #wings

Cómo puedes convertirte en Hijo espiritual del Padre Pio (San Pio de Pietrelcina)

Tekton es un canal de youtube católico nacido en Barcelona (España), puedes encontrar noticias relacionadas con la Iglesia Católica, y recursos de otro tipo como formación católica, oraciones, música católica, vídeos del Papa Francisco, curiosidades, vidas de Santos, el Evangelio del día, y otras muchas cosas más. No dudes en entrar y ver el contenido que sin duda te gustará

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