Learn how the women’s suffrage movement led to the 19th Amendment and changed voting rights in the United States forever.

In this episode of Crash Course Astronomy, Phil takes you through the cause and name of the Moon's phases.

Learn more about Shirley Chisholm and her long-lasting impact on politics on the 50th anniversary of her run for the presidency.

What’s a human? And how did we become humans, anyway? In this episode of Crash Course Biology, we’ll meet some of our closest relatives and trace how we evolved into the brainy, inventive, complex species we are today.

Plants have got you surrounded. They’re in your toothpaste, your bedsheets, and your regular Taco Bell order. In Part 1 we’ll find out what botanists study and how knowledge of plants can help you navigate everyday life. Along the way, we’ll uncover plant...