World Economic Forum closes with U.S. Treasury Secretary Steven Mnuchin calling out Greta Thunberg
CGTN
01:19

The World Economic Forum comes to a close in Davos. Forget world leaders and billionaires- much of the attention focused on a teenage climate activist, Greta Thunberg, and her clash with U.S. Treasury Secretary Steven Mnuchin. CGTN's Guy Henderson reports.