Oct. 27 (Bloomberg) -- Investors worldwide are borrowing dollars to buy assets including equities and commodities, fueling “huge” bubbles that may spark another financial crisis, said New York University professor Nouriel Roubini.

“We have the mother of all carry trades,” Roubini, who predicted the banking crisis that spurred more than $1.6 trillion of asset writedowns and credit losses at financial companies worldwide since 2007, said via satellite to a conference in Cape Town, South Africa. “Everybody’s playing the same game and this game is becoming dangerous.”

The dollar has dropped 13 percent in the past year against a basket of six major currencies as the Federal Reserve, led by Chairman Ben S. Bernanke, cut interest rates to near zero in an effort to lift the U.S. economy out of its worst recession since the 1930s. Roubini said the dollar will eventually “bottom out” as the Fed raises borrowing costs and withdraws stimulus measures including purchases of government debt. That may force investors to reverse carry trades and “rush to the exit,” he said.