You can never know for certain in these situations, but Sullivan's staredown of Trotta may have been his last action ever as a professional footballer.

WSJ: Last-Second Soccer Magic Lifts Doncaster to Promotion

Potassium chloride has been employed as a salt substitute in certain situations in the past, but relatively sparingly.

FORBES: Salt: A Favorite Ingredient Gets A Molecular Makeover

Voice control wouldn't be practical in all situations, but it could be enormously helpful for certain operations, like adjusting settings or reviewing images.

ENGADGET: Apple patents Siri-like system for controlling cameras, PMPs through a computer or smartphone

Yield to maturity is the measurement most often used, but it is important to understand several other yield measurements that are used in certain situations.

FORBES: 5 Basic Things To Know About Bonds