Synopses & Reviews
These 30 ready-to-color illustrations reflect the past and future of environmentally friendly energy sources. Ranging from ancient Greek and Roman water wheels and medieval windmills to modern solar steam engines, they depict a variety of nonpolluting methods of generating power. Captions identify the illustrations.
Synopsis
Thirty ready-to-color images chronicle the past and future of environmentally friendly energy sources. Ranging from ancient water wheels to modern solar cell panels, they depict a fascinating variety of nonpolluting methods of generating power.