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.
Renewable energy is still science-fiction. Renewables technology is ready to go, and is working reliably in countries around the world. South Africa has some of the best renewable resources in the world as it has one of the highest and most stable solar radiations in the world.