US economy grew faster than expected in third quarter

Shares on Wall Street are making a shaky start this Thursday after Google parent company Alphabet reignited fears over the vast sums of capital being spent on artificial intelligence and whether they will pay off in the long run. At the same time, the US economy grew faster than expected in the third quarter as GDP rose at an annual rate of 3.4 percent, beating initial forecasts of 3.2 percent.