Before you toss your old pennies in the coin jar, take a closer look at them. They could be worth thousands of dollars to ...

During World War II, pennies were made of steel to save copper for the war effort. However, a few were mistakenly made of bronze, and these are extremely rare and valuable. Made of 95% copper and ...

Gold isn’t the only metal smashing through record high prices. Copper prices in New York hit a record high on Wednesday after Bloomberg reported that President Donald Trump might impose tariffs on ...

A copper penny is heated and suspended above the surface of acetone in a beaker. The copper demonstrates heterogenous catalysis in the combustion of acetone to carbon dioxide and water. This exotherm ...