This week's YouTube Saturday video comes from Wonderville, a brilliant science website for kids and their teachers (read our recent review here). The featured video looks at biodiversity -the range and variety of organisms on our planet. According to the Wonderville website "understanding biodiversity allows us to better help the earth's animals and plants to survive and thrive. It also provides humans with insights to use this diversity in new and less harmful ways. You'll see - even the smallest creature is important". Enjoy!