Segio and I have the materials and will start building the buildings on friday. We have finished one of the three houses. The house that we made has no dirt or plants on it. It is simply representing the normal roof with three layers of tin foil on the top. We will complete the other two houses on friday through Saturday. If we are done on Saturday we will start the experiment on that day, if not then we will start it on Sunday. The second house we are going to make will have dirt and plants that are yet to be decided (sedum is out of season). For the third house we will just have dirt on the roof so we know if the dirt is helping much.