Tiny Transistors Track Cash

These itty-bitty low power organic transistors can be placed on the surface of bank notes for security or tracking by transmitting information wirelessly to a scanner. A group of German and Japanese scientists manufacture these 250-nanometer-thick transistors using minute amounts of aluminum and gold and a special dry process. They work well on the rough surface of paper and need only three volts to operate.

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9 ways you could mess up this tax season

These mistakes could wind up costing you money or attracting unwanted attention from the IRS.  

Avoid the RAL 

Also: 

• Disappearing tax breaks
• Track down your refund
• Tax-filing money savers