Trees properly placed around a house can save you money and help cool your house in the summer. This is according to the U.S. Forest Service Center for Urban Forest Research, but the concept is easy for everyone to understand. Go outside sometime this summer and stand in the sun for a few minutes. Then walk over to your nearest tree and stand in the shade. I bet you will notice that the shade the tree provides is much cooler than standing in full sun. This same concept can be replicated by planting trees in the right places to cast shadows on your house during different times of the day. Find out where to plant around your house and what trees are best.