Do hotels ever clean their key cards and if so how?
FORBES: How Lenient Are Hotels When It Comes To Checking Out Late?
Meanwhile, the global market is demanding ever more clean diesel fuels and low-sulphur petrol.
Armstrong said no generation was ever "clean, " and the best way forward is a truth and reconciliation process offering amnesty to riders and officials who detail doping in the sport.
Equally some electric vehicle owners have been able to recharge their cars with solar panels, which means their emissions are practically zero (although the emissions involved with actually constructing the solar panels and the cars will mean that no cars are ever totally clean).
Shrouded under the ever- expanding blanket of the Clean Air Act, it is being applied to validate an unprecedented regulatory takeover of carbon-emitting energy and construction industry permitting.
Ever since Google launched Gmail, its clean, Web-based e-mail service, everyone else has been playing catch up.
FORBES: Can Microsoft's New Alternative To Hotmail Take On Gmail?
"Tidal turbine technology is one of the key renewable technologies that will help the UK achieve the carbon dioxide emission reduction targets and is a clean, sustainable replacement for ever more expensive fossil fuels, " she said.
BBC: NEWS | UK | Northern Ireland | Sea power to provide electricity
Can a foreign firm ever be sure that its Indian partner is clean?
ECONOMIST: What a scandal says about government and business in India
Domestic roles have shifted over time, so fathers now may cook, clean and help with the kids more than ever, but the culture has not caught up.
No president has ever been closer to creating a legacy of a nation thriving on clean energy innovation, efficiency, and independence.
Wide, clean, comfortable and efficient trains transport passengers around an ever-widening network.
BBC: NEWS | South Asia | Delhi wants Games to provide legacy
Ever notice that the most effective executives seem to have, almost magically, clean desks and time to spare?
Getting people clean water in the first place was probably the biggest public health victory ever.
He wants the revenue from his proposed tax to clean up America's public squalor, which has bothered certain economists ever since J.
The price of oil aside, he says, the issues that stoked interest in clean tech, including global warming and energy security, are as prominent as ever.
Twenty years from today, we could live in an age defined by ever-more-violent storms and watch as other nations stake out a crucial advantage in clean energy technology.
Ever since, carmakers have been placing their low-emission bets more on plug-in hybrids, clean diesels or pure electric vehicles.
Labour described Ms Champion as a "clean break" candidate following the scandal surrounding Mr MacShane, and she becomes the first-ever woman MP for the seat.
BBC: Rotherham by-election: Sarah Champion holds Labour seat
And as long as Democrats were willing to ignore the ever-increasing concerns of people who tied their faith with public policy, the GOP would continue to clean up at the ballot box.
CNN: Commentary: Democrats finally getting religion on religion
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