One way to compute its value is to shine light through a gas-filled container.

ECONOMIST: Fundamental physics

Packages covered with a sealed layer of clear plastic are modified-atmosphere packages, which have a gas-filled space inside to help preserve freshness and color.

CNN: How to buy the best beef

Fracking of oil and natural gas has created, directly and indirectly, more than a million high-paying jobs and has filled entire states, such as North Dakota, Oklahoma, and Pennsylvania, with boom towns, while repairing their public finances.

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In the 1963 film, filled with comedy all-stars, Winters stood out as a truck driver who destroys a gas station.

CNN: Comedian Jonathan Winters dies at 87