Another Recession Warning: Falling Copper Prices

(CNN) — Some investors look to copper prices as a bellwether for the global economy. If you’re one of them, you have good reason to be worried.
What’s happening: Copper prices hit 16-month lows on Thursday as traders dumped the metal. They’ve dropped more than 11% in two weeks.
“Copper prices are just starting to account for the fact that global growth is slowing,” Daniel Ghali, director of commodity strategy at TD Securities, told me.
The metal is used in man