On any list of calamities threatening the world economy, a China crash ranks at or near the top. Just what would constitute a “crash” is murky. Already, China’s sizzling rate of economic growth has declined from 10 percent annually — the average from the late 1970s until 2011 — to 7 percent, which is still high by historical standards. The question is whether the deceleration continues and growth goes much lower. Read more