If you enjoy Crash Course, I highly recommend that you donate to Subbable. Subbable funds the content ofCrash Course along with a lot of other really important projects that keep our world well educated and engaged.
Instead of creators focusing on number of views (which is what tends to drive advertising-funded projects), they can focus their attention on creating great content for their audience. In the end, we all win!
Here's Hank Green explaining how Subbable works and why you should consider contributing.
Click here if you would like to make a one-time or subscription based donation to Subbable. Keep amazing offerings like Crash Course going for many years to come!