In this episode of Crash Course Biology, you’ll learn how all of life is connected, and why studying biology can help us better understand ourselves and our relationship to all living things.

7News talks with Samuel Ramsey, a local doctor who joined the cast of a popular YouTube show.

And more recently, we’ve figured out how to speed up the process by directly editing plant genes —those tiny units of DNA. Hi! I'm Alexis, and this is Crash Course Botany.