SciShow
What is Taxonomy and Why is it So Complicated?
The classification of animal groups is essential to the the development of modern biology—but it's extremely complicated. Trying to shoehorn the messy, complicated web of interrelationships that is biology into neat boxes has resulted in...
MinuteEarth
What Makes A Dinosaur?
Due to a revolution in our understanding of the tree of life, birds are dinosaurs, while dimetrodons are not. ___________________________________________ FYI: We try to leave jargon out of our videos, but if you want to learn more about...