The Biggest Business Blunders Ever is an interesting article from Forbes.com.

The stories span industries from technology to real estate. Market miscalculations, short-term thinking and rotten ethics are the broad themes. Taken together, the collective devastation of these miscues in current dollar value creeps into the trillions.

Then go through the accompanying pictures. Learn from their mistakes

Then follow-up with The Biggest Risks To Your Business.