Teenage climate activist Greta Thunberg on Friday said calls to the corporate elite meeting in Davos to immediately disinvest in fossil fuels had been ignored.

Billionaire philanthropist George Soros is delivering a speech in Davos, an annual event in which he addresses an array of global, political and technological issues.

US Treasury Secretary Steven Mnuchin told teenage environmentalist Greta Thunberg on Thursday that she should study economics, a jibe that prompted the climate activist to say she does not need a degree to know the world was not meeting its climate targets.