(VOVWORLD) - Vietnam saved 353,000 kWh of electricity, equivalent to more than 28,600 USD, during one hour from 20:30 to 21:30 on Saturday, when the entire country turned...
(VOVWORLD) - Earth Hour, a global environmental movement of the World Wide Fund for Nature (WWF), is going to be marked digitally this year on March 27 at 8:30 p.m...