Thousands of years ago our ancestors powered their lives by burning things — wood mostly, but sometimes peat or animal dung. They cooked their food over a fire, they warmed themselves with that same fire. They burned stuff when they needed to make tools and they burned stuff to create light at night. Today, many thousand years into the future, most humans still power their lives by burning things. Our fires are more sophisticated today. We burn stuff in multi-million dollar power plants or in an internal combustion engine, but most of us still power our lives almost exclusively by […]