Christian Science Monitor: Although Hurricane Sandy wreaked havoc last month on many  homes and businesses on the US East Coast, particularly in areas of New Jersey and New York, solar and wind energy installations seem to have escaped serious damage. One solar panel manufacturer, SunPower, guarantees its panels to withstand winds up to 110 mph (in New Jersey, the highest wind speeds during the hurricane approached 90 mph). Nevertheless, wind and solar resources still rely on the larger power grid to distribute their energy and so remain just as vulnerable to extreme weather events as traditional systems, writes David Unger for the Christian Science Monitor.