TestTube, a Discovery Digital network, is a network for all ages where it’s cool to be smart and curious.  Brain Stuff is one of the channels that I like the best from TestTube.  Brain Stuff also has a YouTube Channel that is great because the content is real-world and the videos are usually less than 3 minutes.  This newly created channel features short explanations to fun science questions like, How Much Does Planet Earth Weigh and Why Do Feet Stink?  Please check out these growing and very interesting videos.

One of my favorite Brain Stuff videos is embedded below.