The world has had two revolutions in power. Steam engines kicked off the first one in the late 1700s. They provided steady mechanical energy. Electricity started the second revolution in the late 1800s.
It created a wired world with many gadgets to make life easier. Now a third one is brewing. Most of our electrical energy has come from burning fossil fuels such as coal and oil. But they create pollution. Also, they will run out one day. Can we make our electric lifestyle better and also make it cleaner and more reliable?
