  The need for nontraditional energy sources has been well publicized. This program consolidates information about the many promising and exciting alternative solutions to the energy problem. Students learn how energy from the sun can supply power for heat, electricity and transporation by means of solar cells, solar towers and active or passive solar heating system. Other sources of renewable energy are discussed-biomass, wind, falling water and tides. Each is evaluated in terms of efficiency in recieving, storing and providing energy. (48 min) |