EarthElectric cars could act as batteries for the energy grid Electric and hybrid vehicles could act as cheaper energy stores while not being driven, say US researchers ¿ìè¶ÌÊÓÆµ
EarthHydrogen brewing gets an electrical boost A zap of electrical charge helps microbes ferment almost all of the hydrogen from organic waste – the process might one day provide greener fuel ¿ìè¶ÌÊÓÆµ