And existing problems have not gone away: most obviously, hard decisions still have to be made about whether to give more help to Greece, which barely featured in the summit's discussions.
When it comes to household toxins, the landscape is always changing as new threats emerge and solutions to existing problems are discovered.
He also had pre-existing hypertension and liver problems and had a family history of sudden death from exercise (his half-brother died at age 20 of an aneurysm while playing baseball).
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"As more networks develop, and existing ones grow, the problems of information routing and traffic flow become increasingly more difficult to solve, " says Dr Raine.
An EIS union spokesman said it was not convinced that the bill addressed existing governance problems and said the regionalisation programme seemed to be driven by "economic reasoning rather than a clear education rationale".
There is incredible fear underlying the existing market, and the current problems with the economy seem to be much deeper than initially anticipated.
Specialists in technology law at the Tilburg Institute for Law, Technology, and Society in the Netherlands are drawing up a taxonomy of robotic devices and matching them against existing legal terminology to identify potential legal problems relating to the definitions of human autonomy, disability, normalcy and equality.
Supply growth has been plagued by problems with existing operations and delays with new mine production.
The current drive to expand Medicaid is really just an attempt to correct the problems created by the existing Medicaid and all the other government programs and regulations that have similar effects.
"Pre-existing problems that people are able to sort of ignore and work around come to the surface and have to be dealt with, " Cannata said.
In recent months, the Federal Reserve and other banking agencies have issued statements calling on mortgage lenders and mortgage servicers to find prudent ways to resolve loan problems with existing borrowers.
But the problems can all be overcome through existing engineering solutions, if politics and economics can only change tack.
But the accident will exacerbate existing problems for the oil giant, giving its unions new negotiation leverage and further soiling the company's poor safety record, which already included several oil spills.
Mr Hirsch said much could be done by local and central government to reduce existing poverty, but thought should also be given to averting future problems.
"One of the problems with existing electronic nose instruments is that they're very large and another thing is that they have limited similarities with the biological nose, " Dr Pearce told the BBC.
Existing IT systems were designed to address problems of data integrity, process management, security and speed for multi-channel transactions.
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He says problems have arisen because of the "conflation" of two distinct things - the pilot and the existing guidance, in place since 2007, that border staff must follow.
The report admits that many of the problems faced were the result of the challenges of NHS modernisation and the creation of new organisations from four existing units.
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These informal sprawls, for all their problems, may well prove to be a source of new products--and refinements and improvements of existing products--helping to fire future economic growth.
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