Coupla questions... What is the difference between the pennies below? And why does the penny on the left look like an albino? Hint: It has to do with the historical significance of the year in which it was minted. Answers will be forthcoming, thus ensuring that you will have to read this wretched piece to the end.
What's up with these two? Photo: Wikipedia Commons
Unlike nasty elements, such as fluorine (1) and mercury, (2) copper is one of the "elemental good guys." Copper metal has a number of unique properties that make it so important...