The Fed is the central bank of the United States, the lynchpin of the country's banking system.  Follow the latest news from the Fed here. 

Don't know your M1 from your M3?  (No, that's not a kind of machine gun and a kind of BMW.  Well, it is, but that's not what we're talking about.)  Get straightened out with this helpful guide from the folks over at How Stuff Works. 

For a long time, people measured the value of money by its value in gold.  But how much is gold worth?  This little time machine traces the value of gold (which is a hot investment right now, by the way!) all the way back to the year 1257.  Now that's a long-term trend… 

How many euros or yen or pounds or yuan is a buck worth today?  Find out here.