Washington ? Discouraging economic data from around the globe have heightened fears that another recession is on the way.

Fresh evidence emerged Thursday that U.S. home sales and manufacturing are weakening. Signs also surfaced that European banks are increasingly burdened by the region’s debt crisis and sputtering economy.

The rising anxiety ignited a huge sell-off in stocks that led many investors to seek the safety of U.S. Treasurys.

Economists say the economic weakness and the stock markets’ wild swings have begun to feed on themselves. Persistent drops in stock prices erode consumer and business confidence. Individuals and companies typically then spend and invest less. And when they do, stock prices tend to fall further.

“A negative feedback loop … now appears to be in the making” in both the United States and Europe, Joachim Fels and Manoj Pradhan, economists at Morgan Stanley, said in a report Thursday. Both economies are “dangerously close to a recession. … It won’t take much in the form of additional shocks to tip the balance.”

The risk of a recession is now about one in three, according to Morgan Stanley and Bank of America Merrill Lynch.

Among the worrisome economic signs:

l A survey by the Federal Reserve Bank of Philadelphia shows that manufacturing in the mid-Atlantic region contracted in August by the most in more than two years. The steep drop, on top of a smaller decline in a New York Fed survey this week, means U.S. manufacturing probably contracted in August, economists said.

It would be the first decline since July 2009 — a worrisome sign because manufacturing has been a key source of U.S. growth in the two years since economists say the Great Recession ended.

l U.S. home sales fell in July for the third time in four months, the National Association of Realtors said. Sales dropped 3.5 percent to a seasonally adjusted annual rate of 4.67 million homes. That’s far below the 6 million homes that economists say must be sold to sustain a healthy housing market.

Sales are lagging behind last year’s pace — the weakest since 1997. “There seems to be a correlation between the stock market and home prices,” said Andrew Davidson, a New York-based mortgage industry consultant.

l Consumer prices rose 0.5 percent in July, mostly due to more expensive gas and food. The “core” price index, which excludes volatile food and energy prices, rose 0.2 percent. The higher prices add to the burdens for Americans already squeezed by stagnant pay, though economists don’t expect prices to rise much further. And gasoline has fallen this month.