A very different kind of hydropower
Is it really possible to hold a charge in nothing but salty water? How about controlling a computer using nothing but the electrical signals in your head? National Geographic expert Leslie Dewan finds out.
Further information on official fuel consumption figures and the official specific CO~2~ emissions of new passenger cars can be found in the EU guide "Information on the fuel consumption, CO~2~ emissions and energy consumption of new cars," which is available free of charge at all sales dealerships, from DAT Deutsche Automobil Treuhand GmbH, Hellmuth-Hirth-Strasse 1, D-73760 Ostfildern, Germany and at www.dat.de.
