Wind energy - Graham Rickard

In books for children of this age, alternative energy has often been treated as one topic, either in a single book or relegated to the last chapter in a volume on energy. After the oil crisis of the early 1970's the subject underwent considerable research, and alternative energy projects are now in operation around the world.;As well as examining these economically viable schemes, the series discusses possibilities for the future. These are likely to be increasingly relevant as environmental concerns assume more importance.;This book looks at the way winds are formed, how they were used to provide power in the past, how they are used now and how they may be used in future.;After showing why the winds blow, the author gives a history of wind power, from the first sailors to Dutch windmills. Following chapters explore how wind energy is used today, from windfarms in Wales and California to giant turbines on Orkney and Hawaii. The book finishes with a glimpse of the 21st century and the future of wind energy. The project involves making a hand-held wind turbine that will lift light objects.