But European music organisations took exception to what became called the "bars and grills" amendment, attached to the legislation after pressure from American restaurant and bar owners.

BBC: Songwriters win US copyright battle

In other words the iron lung is sealed and attached to bellows, which lower the air pressure inside the iron lung to create a negative pressure.

CNN: 'I lived in an iron lung for seven years'

SonicBoom uses a combination of high-tech and peer pressure: members can monitor vital signs with tiny devices attached to their shoes and join groups such as Weight Warriors.

ECONOMIST: Schumpeter