This is one of those things that I look at and think, "Haha...Holy cow!...Haha" It makes me giddy and giggly. It's basically a little sustainable ecosystem in your house! Right now, my hubby tells me that this is a concept project and you can't buy one yet. Each of the layers feed into the next with bottom layer circling back up to the top and the entire thing producing excess oxygen into your home atmosphere....:) wow!
The picture was taken from Gizmodo. You can get more info from here.