Videoblogger Hank Green gives the run down on the top five ways humans are negatively impacting the environment and having detrimental effects on the valuable ecosystem services which a healthy biosphere provides.

Crash Course is an Webshow created to educate viewers on a variety of topics.

Written by miriam

Striving to be "The Infinite Probability Drive within the Heart of Gold," Miriam's interests include accidentally purchasing everything in purple, going deep on the frisbee field, local food, and taking the stairs. She studied film at Middlebury College even though she won't admit it (her degree was in Environmental Studies).

Leave a Reply