To feel the effects of the "urban heat island" wait until the sun has gone down for a few hours and take the dog out in the backyard for a business transaction. Walk away from the brick and stone of your home and step into the grass. You will experience a noticeable drop in temperature; walk closer to your house and the temperature rises.
Stupid environmental tricks, I've got it covered.
By
Anonymous, at
2:32 PM
This is why you can get away with planting things close to your house that normaly wouldn't survive in the cold of winter.