The policy-induced property slowdown is stressing the finances of local governments, which rely on land sales for revenue.

WSJ: China Housing Prices Fall Again

The North American natural gas market has been driven by price-induced responses, said analysts at Goldman Sachs, but it is slowly transitioning to policy-induced changes.

FORBES: 2012 Outlook: Natural Gas Prices Likely To Remain Under Pressure, For Now

The 2007-09 recession was induced by a financial crisis and some, most notably economists Carmen Reinhart and Kenneth Rogoff (authors of "This Time is Different: Eight Centuries of Financial Folly"), argue that financial crises pose more difficult recovery problems than do policy-induced recessions.

WSJ: Edward Lazear: The Worst Economic Recovery in History

Of course, policy makers hope loose-money-induced higher asset prices will lead to a wider recovery.

WSJ: Central Bankers' Change

CO2 is the greenhouse gas of greatest concern to policy makers looking to stem human-induced climate change.

BBC: No let up in greenhouse gas rise