The generation of energy by fossil-fuel alternatives such as wind and solar power is becoming more and more practical. A major hurdle in switching to alternative energy sources is that many of them, such as wind and solar power, are intermittent. Methods for storing energy during times of surplus production, to be used when demand exceeds supply, is an essential part of an alternative energy economy. Much scientific and engineering effort is going toward this goal.… Read the rest “Storing Energy to save earth”
alternative energy sources
Geothermal, a continuous, infinite, energy source without greenhouse gases or radioactive waste
(Revised August 27, 2023)
How can we produce enough energy to live well without creating a level of greenhouse gases that generates an increasingly hostile climate? Alternative energy sources like wind and solar are part of the answer, but it isn’t going to be easy to replace the massive quantities of energy currently derived from non-renewable sources such as coal, natural gas, and oil. A useful hub for information on ‘green energy’ sources, defined as those that do not increase the world’s output of carbon to the atmosphere, can be found here.… Read the rest “Geothermal, a continuous, infinite, energy source without greenhouse gases or radioactive waste”
The Great Common Sense of SEWTHA
The acronym SEWTHA stands for the title of the book ‘Sustainable Energy: Without the Hot Air’, written by the late Sir David MacKay (above, on his bike), who was a physicist profoundly interested in the energy future of the world. In SEWTHA, he uses the physicist’s toolkit to analyze how much energy we use, how we obtain it, and, most importantly, how we can replace our current use of fossil fuels with sustainable energy sources.… Read the rest “The Great Common Sense of SEWTHA”