Ryan Biggs' Feb 12 article concerning the heat island effect was interesting and timely. A recent study on the efectiveness
of rooftop gardens versus painting the roof white (to increase the reflectance to sunlight) showed the painted roofs to save more energy (in southern climates) and also cost less to install and maintain. Since it has been gradually getting warmer since the 1850s and urbanization is here to stay, options such as these are one way to mitigate some of the warming effects of our high density living patterns. And save money on cooling bills too!