Here’s yet another sign that China’s economy may be teetering on the brink of a massive debt crisis. Unproductive debt in China—that is, debt that’s used to drive up asset prices—swelled in 2015, eclipsing the level seen in the U.S. in the run-up to the Great Financial Crisis, said Torsten Slok, chief international economist at Deutsche Bank, in a note to clients published Tuesday. Slok’s findings are illustrated in the chart below, where he compares the level of credit growth required in the U.S. and China to generate 1 percentage point of gross domestic product growth. (He notes that the red bar for 2015 also grew, ... (full story)