A wonderful science animation video from Kurzgesagt about living in a thin moist layer on a small wet rock. Yeah, I know that it's 7:21 minutes long, but, trust me, I guarantee that you will be engaged and will learn something (probably many things) about Planet Earth. And will be tempted to watch a couple of their other videos offered here. [NOTE: Kurzgesagt is German for "in a nutshell"].