By 2003, the differences were less than the average for the period, thanks to a closing of the regulatory gap, but they persisted nonetheless.

ECONOMIST: Economics focus

Adoption would fill in a major gap in the regulatory regime for derivatives.

FORBES: The 'Other' Fiscal Cliff: Unfinished Financial Reforms

"At the moment, there is just a complete gap - there is no European regulatory regime for reusable space vehicles, and we need one, " he told BBC News.

BBC: Move to open sky for Skylon spaceplane