Global shares were mixed in cautious trading Monday ahead of the Labor Day holiday in the U.S., when stock exchanges are closed.

France's CAC 40 slipped 0.3% in early trading to 7,611.64, while Germany's DAX fell 0.1% to 18,881.14. Britain's FTSE 100 was little changed, down less than 0.1% at 8,370.39. U.S. shares were set to drift lower with Dow futures down 0.1% at 41,613.00. S&P 500 futures fell 0.1% to 5,654.25.

Iran's president said his country needs some $100 billion in foreign investment to achieve an annual target of 8% economic growth up from the current rate of 4%.

Climate change is stressing rainforests where the highly sensitive cocoa bean grows, but chocolate lovers need not despair, say companies that are researching other ways to grow cocoa or develop cocoa substitutes.

Scientists and entrepreneurs are working on ways to make more cocoa that stretch well beyond the tropics, from Northern California to Israel.