Natural Law Theory: Crash Course Philosophy #34

Our exploration of ethical theories continues with another theistic answer to the grounding problem: natural law theory. Thomas Aquinas’s version of this theory says that we all seek out what’s known as... Read more »

Immune System, Part 1: Crash Course Anatomy & Physiology #45

Our final episodes of Anatomy & Physiology explore the way your body keeps all that complex, intricate stuff alive and healthy — your immune system. The immune system’s responses begin with physical... Read more »
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Federalism: Crash Course Government and Politics #4

In which Craig Benzine teaches you about federalism, or the idea that in the United States, power is divided between the national government and the 50 state governments. Craig will teach you... Read more »

The Periodic Table: Crash Course Chemistry #4

Hank gives us a tour of the most important table ever, including the life story of the obsessive man who championed it, Dmitri Mendeleev. The periodic table of elements is a concise,... Read more »

Mitosis: Splitting Up is Complicated – Crash Course Biology #12

Hank describes mitosis and cytokinesis – the series of processes our cells go through to divide into two identical copies. References: http://www.eurekalert.org/pub_releases/2012-02/wifb-amm020812.php http://faculty.clintoncc.suny.edu/faculty/michael.gregory/files/bio%20101/bio%20101%20lectures/mitosis/mitosis.htm http://www.genome.gov/Images/press_photos/highres/97-300.jpg http://www.nature.com/nrm/journal/v2/n1/fig_tab/nrm0101_072a_F1.html https://www.genome.gov/Glossary/index.cfm?p=viewimage&id=33 http://www.sci.sdsu.edu/multimedia/mitosis/mitosis_gif2.html Table of Contents 1. Mitosis... Read more »

Reproductive System, Part 1 – Female Reproductive System: Crash Course Anatomy & Physiology #40

Human reproduction is complicated and important, and it’s going to take a four-part series for us to cover it. Today, we’re kicking that off with the female reproductive system, starting with how... Read more »

Autonomic Nervous System: Crash Course Anatomy & Physiology #13

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.... Read more »

Introduction: Crash Course U.S. Government and Politics

In which Craig Benzine introduces a brand new Crash Course about U.S. Government and Politics! This course will provide you with an overview of how the government of the United States is... Read more »

Immune System, Part 2: Crash Course Anatomy & Physiology #46

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,... Read more »

Fiscal Policy and Stimulus: Crash Course Economics #8

In which Jacob and Adriene teach you about the evils of fiscal policy and stimulus. Well, maybe the policies aren’t evil, but there is an evil lair involved. In this episode we... Read more »