The frontal lobe is the part of the brain that controls important cognitive skills in humans, such as emotional expression, problem solving, memory, language, judgment, and sexual behavior. It is, in essence, the âcontrol panelâ of our personality and our ability to communicate.
In order for the power grid to function, demand for energy must exactly match supply. Power demand is relatively predictable and conventional power plans, like nuclear plants and natural gas, can adjust output accordingly. Solar and wind power, however, cannot easily adjust output. They also provide power unpredictably relative to conventional power sources.
1. Solar energy can only be harnessed when it is daytime and sunny. 2. Solar collectors, panels and cells are relatively expensive to manufacture although prices are falling rapidly. 3. Solar power stations can be built but they do not match the power output of similar sized conventional power stations.