By JOSH ZUMBRUN and CAROLYN CUI

The global economy is awash as never before in commodities like oil, cotton and iron ore, but also with capital and labor—a glut that presents several challenges as policy makers struggle to stoke demand.

“What we’re looking at is a low-growth, low-inflation, low-rate environment,” said Megan Greene, chief economist of John Hancock Asset Management, who added that the global economy could spend the next decade “working this off.”

The current state of plenty is confounding on many fronts. The surfeit of commodities depresses prices and stokes concerns of deflation. Global wealth—estimated by Credit Suisse at around $263 trillion, more than double the $117 trillion in 2000—represents a vast supply of savings and capital, helping to hold down interest rates, undermining the power of monetary policy. And the surplus of workers depresses wages.

Meanwhile, public indebtedness in the U.S., Japan and Europe limits governments’ capacity to fuel growth through public expenditure. That leaves central banks to supply economies with as much liquidity as possible, even though recent rounds of easing haven’t returned these economies anywhere close to their previous growth paths.

“The classic notion is that you cannot have a condition of oversupply,” said Daniel Alpert, an investment banker and author of a book, “The Age of Oversupply,” on what all this abundance means. “The science of economics is all based on shortages.”

Read the rest of the article here…