Frontotemporal dementia (FTD) or frontotemporal degenerations refers to a group of disorders caused by progressive nerve cell loss in the brain's frontal lobes (the areas behind your forehead) or its temporal lobes (the regions behind your ears).
Solar thermal (heat) energy is a carbon-free, renewable alternative to the power we generate with fossil fuels like coal and gas. This isn't a thing of the future, either.
SOLAR ENERGY EDUCATION. Solar power is clean green electricity that is either created from sunlight or from heat from the sun. Having solar electricity in your home usually means setting up a solar photovoltaic system on your roof. Definition of photovoltaic: Photo = âlightâ and photons = energy particles coming from sunlight; v oltaic = producing a voltage or volts. Abbreviation = PV. Solar energy is a renewable free source of energy that is sustainable and totally inexhaustible, unlike fossil fuels which are finite.