Chinese economic winter 'cooling' world economy
20 August 2015 Last updated at 22:46 BST
There are growing fears about the health of the global economy after a day of market turmoil.
Across the world share prices and currencies have fallen and the London stock exchange has dropped to its lowest level for seven months.
The slowdown in China, the world's second largest economy, is being blamed.
The BBC's economics editor Robert Peston examines the prospects for the world's economy.