Next stop in our tour of your sensory systems? VISION. With a little help from an optical illusion, we take a look inside your eyes to try to figure out how your... Read more »
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... Read more »
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.... Read more »
Moving on to our unit on the Physics of Electricity, it’s time to talk about charge. What is charge? Is there a positive and negative charge? What do those things mean? In... Read more »
Welcome to Crash Course Office Hours! Alizé Carrère and April Luginbuhl Mather answer your questions on human and physical geography, including how rocks form, how melting glaciers impact water resources, and what... Read more »
So, what is geography? In our first episode of Crash Course Geography, we will endeavor to answer this seemingly simple question with the help of a similarly simple factoid: that the US... Read more »
During our last several episodes, Europe and the European-controlled world have been in crisis. Wars, disease, climate changes, and shifts in religious and political power threw the European world into turmoil. People... Read more »
Today on Crash Course Mythology we’re starting in on creation stories. This week, we’ll focus on the creation of the universe out of nothing, or Ex Nihlio creation. Basically, a god decides... Read more »
So, what exactly is a scientific revolution? And are they more than just moments in time Historians use to mark the beginning and ending of things through time? In this episode we’ll... Read more »
Food insecurity, or the lack of access to enough nutritious food, is a complex problem. In the 21st century, even with all of our advances in technology, access to food is still... Read more »