Yellen spurs global stock rally as oil rebounds, dollar tumbles

Sydney

Stocks jumped around the world on Wednesday after Federal Reserve chair Janet Yellen reasserted on Tuesday the US central bank's gradual approach to raising interest rates. Commodities climbed as the dollar extended its worst month in more than five years.

Ms Yellen's signal that weakening world growth calls for a slow approach to tightening policy ignited gains for shares from Shangh…