Just about everyone will agree that trees are made from sunlight, water, and soil the trees sucks up from their roots. But the surprising truth is that trees are made from air! Trees are solar-powered machines that convert air into wood. Why is it that, despite the fact that photosynthesis is one of the most widely taught subjects in science, so few people really understand the central idea underlying this system?
Watch the video here.
I've posted this to the blog before but I think it is worth a repost. I've thought about this video a lot and I think the point it makes is spot on. Somewhere in all the teaching, especially in big intro classes, we forget to include the wonder. Sometimes you really do need to stop and see the wood in the trees.