In this video, I look at an unseen cornerstone of our ecosystems: fungi. Fungi are the reason why life on land exists, as they helped plants move from the ocean onto land via symbiosis. This video is brought to you by CuriosityStream. Start your free trial now at https://curiositystream.com/wonderwhy Even to this day, fungi is an incredibly important part of nature, and also has so many different uses to human. Although the word "fungus" may conjure up negativity in some, fungus has been the driving force for evolution, and life as we know it would be possible without them. Music by Epidemic Sound: http://epidemicsound.com/creator Huge thank you to CuriosityStream for letting me use footage from their awesome documentary, The Kingdom: How Fungi Made Our World. Watch it free right now! https://curiositystream.com/wonderwhy