Later in 1970, the government passed an expanded Clean Air Act and created the Environmental Protection Agency.

CNN: STORY HIGHLIGHTS

Our air forces have expanded their interaction to include multinational air exercises hosted by each country, such as the U.S. RED FLAG and Brazilian CRUZEX exercises.

WHITEHOUSE: Fact Sheet: U.S.-Brazil Defense Cooperation

"If this expanded version was launched, Air France-KLM could order a significant amount, " Spinetta was quoted as saying by the French business daily La Tribune.

FORBES: LONDON

The program will be expanded next year with the Air Force, Army and Navy combining funds for two courses to certify 60 active-duty physicians as medical acupuncturists.

FORBES: The Worst Quackery of 2011: Battlefield Acupuncture

The model that Mr Smith cooked up at Yale, based on a hub-and-spoke system of overnight air delivery, has since expanded to encompass a broad portfolio of businesses contributing to efficient supply chains.

ECONOMIST: Face value

In 1985, President Regan expanded the program, increasing the number of air marshals, in response to a series of domestic and international hijackings, including TWA Flight 847, in which a U.S. Navy Diver was killed and his body dumped on the tarmac in Beirut, Lebanon.

CNN: STORY HIGHLIGHTS

The problem is that air heats up when pressurised and cools down when expanded.

ECONOMIST: Energy storage

First prize: free tickets on budget carrier Air Berlin PLC, which had expected to make Brandenburg its new, expanded hub.

WSJ: Berlin's New Airport Is Racking Up Delays Even Before It Opens

The opponents, led by Chicago's powerful Mayor Richard Daley, dispute the air-traffic projections and argue that the two existing airports can be expanded to do the job.

ECONOMIST: Air travel: Relieving O’Hare | The

The promoters expanded the dance tent and added a second EDM-only venue, an igloo-shaped nightclub with air conditioning, wood floors and reproductions of paintings by old European masters on the walls.

WSJ: The State of Things | Coachella Valley Music & Arts Festival | Jim Fusilli