ISBN-13: 9781608760060 / Angielski / Miękka / 2010 / 85 str.
'Renewable Energies' covers six sources of renewable energy, starting with the popular ones such as solar & wind, but going on to others: waves, tides, hot rock geothermal & hydro. The feasibility in each case is analysed, stressing how the inexhaustible energies are all cheap after the collecting machinery is paid for.