Banks weigh on world markets after China warning

World stock markets fell Tuesday following big gains on Monday, with China's main index posting its biggest drop in three months after the country's central bank warned commercial banks to control their lending.

• Heinz 2Q profit falls, but sales improve AP
• Stock futures little changed ahead of open AP
• Citigroup sells Diners Club N. American ops AP
• CPSC chief: Agency moved too slowly on crib safety AP
• Medtronic 2Q profit rises 59 percent on sales AP
• Ahead of the Bell: Consumer Confidence AP
• GM to present Opel plan to unions on Wed AP
• Oil slips towards $77 as markets await data AP
• Economic recovery likely not quite that energetic AP