The convenience store chain's Fuel Day special on Thursday, Nov. 21, can get you 40 cents off per gallon between 4 p.m. and 7 p.m. local time. The discount is on all types of gas and the sale ...

All fuel cells have the same basic configuration, an electrolyte and two electrodes, but there are different types of fuel cells, based mainly on what kind of electrolyte they use. Many ...