As a result, in sports where the inherent demands limits its athletes to an infrequent competition schedule, there existed a very real possibility that unless a trip to the U.K. proved particularly fruitful, it could yield more in U.K. tax than it did in winnings.

FORBES: Move up http://i.forbesimg.com t Move down

Allowing firms to use trademark law as a trade barrier limits competition, especially on price, damaging consumer interests.

ECONOMIST: Parallel imports

Yet this broadening also suggests limits to their potential, since it is bringing them up against stronger competition.

ECONOMIST: We have lift-off | The

But Obamacare largely prescribes the benefit design and limits cost sharing, leaving networks one of the few levers that plans have to manage costs and competition.

FORBES: The New Obamacare Insurance Is Looking More Like Medicaid

While this technology still has a long way to go, challenges such as NASA's October 21 First Annual Space Elevator Competition at the Ames Research Center in Silicon Valley are spurring design teams to push the limits of both their robots and the super-strong, carbon nanotube-based ribbons that are key to supporting them.

ENGADGET: Space elevator robot reaches 1000 feet