G20 seeks to smooth economic shock waves from China

World finance ministers and central bankers gather in Turkey this weekend to grapple with the fallout of slowing growth in China, tanking emerging economies and panicked global stock markets. Signs that China's economy -- the world's second-largest -- is slowing more than expected have panicked stock markets, pushed commodity prices to fresh lows, sparked a rout in emerging market currencies and thrown into question a US interest rate rise previously expected in September. The potential chilling