TOKYO -- The metal that is sometimes given the "Dr." honorific for its ability to take the temperature of the global economy is now looking at two difficult patient charts -- those of China and Chile.
China's home-buying restrictions take a toll half a world away

A worker monitors things at a copper smelter in South America.
TOKYO -- The metal that is sometimes given the "Dr." honorific for its ability to take the temperature of the global economy is now looking at two difficult patient charts -- those of China and Chile.