So what is an animal anyway? In our inaugural episode of Crash Course Zoology, we’ll endeavor to answer just that because as it turns out, it’s complicated! But before we get there we’ll need to ...

In this final episode of Crash Course Zoology, we review everything we’ve learned and even look at advances in the field that took place in just the 14 weeks of this course! Rae also shares various ...

Today, in the penultimate episode of Crash Course Zoology, we're going to use everything we've learned so far to try and figure out what a "species" even is anyway! As you'll see, the incredible ...

This fourteen-episode series takes a rapid deep dive into the weird and wonderful biology of animals, guiding us across the tree of life as we endeavor to answer what makes an animal an animal anyway?

In 2011, brothers John and Hank Green created an educational YouTube channel called “Crash Course” with the goal of spreading high-quality educational videos for everyone, free of charge. A year later ...