The Learning Edge

So we all know that breathing is pretty important, right? Today we’re going to talk about how it works, starting with the nameless evolutionary ancestor that we inherited this from, and continuing to the mechanics of both simple diffusion and bulk flow, as well as the physiology of breathing, and finishing with the anatomy of […]

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You can directly support Crash Course at http://www.subbable.com/crashcourse Subscribe for as little as to keep up with everything we’re doing. Also, if you can afford to pay a little every month, it really helps us to continue producing great content. *** What exactly are Personality Disorders? How can they be diagnosed? Can we prevent some […]

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Hank talks about the molecules that make up every living thing – carbohydrates, lipids, and proteins – and how we find them in our environment and in the food that we eat. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse Resources for this episode […]

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Today we wrap up our discussion of the media by talking about how the government interacts with and influences the content we see. Now it may be easy to assume that because we live in a free-market capitalist society, the only real regulation of the media is determined by the consumers, but this isn’t necessarily […]

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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, […]

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Hank introduces us to that wondrous molecule deoxyribonucleic acid – also known as DNA – and explains how it replicates itself in our cells. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/TheCrashCourse References for this episode can be found in the Google document here: […]

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Hank imagines himself breaking into the Hot Pockets factory to steal their secret recipes and instruction manuals in order to help us understand how the processes known as DNA transcription and translation allow our cells to build proteins. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook! http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on […]

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Hank describes mitosis and cytokinesis – the series of processes our cells go through to divide into two identical copies. Crash Course Biology is now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/youtubecrashcourse Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse References for this video can be found in the Google document here: http://dft.ba/-2rVV Table of Contents […]

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Even though you probably don’t choose to spend a lot of time thinking about it, your pee is kind of a big deal. Today we’re talking about the anatomy of your urinary system, and how your kidneys filter metabolic waste and balance salt and water concentrations in the blood. We’ll cover how nephrons use glomerular […]

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So today Craig is going to look at political ideology in America. We’re going to focus on liberals and conservatives and talk about the influencers of both of these viewpoints. Now, it’s important to remember that political ideologies don’t always perfectly correspond with political parties, and this correspondence becomes less and less likely over time. […]

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UCI Math 4: Math for Economists (Summer 2013) Lec 01. Math for Economists View the complete course: http://ocw.uci.edu/courses/math_4_math_for_economists.html Instructor: Jason Kronewetter, Ph.D. License: Creative Commons CC-BY-SA Terms of Use: http://ocw.uci.edu/info More courses at http://ocw.uci.edu Description: UCI Math 4 covers the following topics: linear algebra and multivariable differential calculus suitable for economic applications. Recorded on August […]

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We’re kicking off our exploration of muscles with a look at the complex and important relationship between actin and myosin. Your smooth, cardiac, and skeletal muscles create movement by contracting and releasing in a process called the sliding filament model. Your skeletal muscles are constructed like a rope made of bundles of protein fibers, and […]

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Hank describes why plants are so freaking amazing – discussing their evolution, and how their cells are both similar to & different from animal cells. Crash Course Biology now available on DVD! http://dftba.com/product/1av/CrashCourse-Biology-The-Complete-Series-DVD-Set Like CrashCourse on Facebook: http://www.facebook.com/YouTubeCrashCourse Follow CrashCourse on Twitter: http://www.twitter.com/thecrashcourse This video uses sounds from Freesound.org, a list of which can be […]

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Last week we covered multiple star systems, but what if we added thousands or even millions of stars to the mix? A star cluster. There are different kinds of clusters, though. Open clusters contain hundreds or thousands of stars held together by gravity. They’re young, and evaporate over time, their stars let loose to roam […]

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Today Hank explains your unsung lymphatic system and how it supports cardiovascular function by collecting, filtering, and returning interstitial fluid back into the bloodstream via a system of lymphatic vessels. He also explains the system’s major role in fighting off infection, and how lymph nodes, and other lymphoid organs, and MALT areas house antigen-attacking lymphocytes […]

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