World oil prices fell Friday on resurgent worries over a supply glut and weak demand, with some analysts forecasting crude prices could fall to $40 a barrel.

Europe's main stock markets fell at the open on Friday, with sentiment hit by the fatal Nice truck attack according to traders, offsetting Wall Street records and positive Chinese data.

London's benchmark FTSE 100 index dropped 0.2 percent to 6,641.75 points compared with the close on Thursday.

Boeing, creator of some of the world's most iconic aircraft of the 20th century, commemorates its centennial Friday facing multiple challenges to remain at the forefront of global aerospace innovation.

At the top of the list is European archrival Airbus, which has topped Boeing in commercial orders in recent years and made inroads into the American market by building planes on US shores.

The pound built on the previous day's gains in Asia Friday after the Bank of England surprised markets by holding fire on an interest rate cut at its first meeting since Britain voted to leave the European Union.

Japanese gaming giant Nintendo soared again Thursday, taking a week-long rally to 75 percent as investors ride the coattails of the Pokemon Go phenomenon sweeping the planet.

World oil prices rebounded Thursday as dealers snapped up bargain crude, one day after the commodity sank to fresh two-month lows on disappointing US inventories.

Britain's new finance minister Philip Hammond on Thursday ruled out an emergency budget in response to economic turbulence triggered by the country's vote in favor of exiting the European Union.

Venezuelan President Nicolas Maduro has extended the country's state of "economic emergency" for another 60 days, an official newspaper reported, a sign of declining conditions in the crisis-hit country.

The state of emergency, in place since January, was necessary due to "extraordinary... social, economic, political, natural and ecological" pressures, according to the presidential decree, signed by Maduro on Tuesday and released Wednesday.

The Bank of England is mulling whether to cut interest rates for the first time in over seven years to curb economic fallout from Britain's vote to exit the EU.

Their heads bowed, young Saudi men concentrate on exam papers in a workshop filled with industrial machines that will help them earn a living.