Mnuchin says Greta Thunberg can tell us what to do ‘after she goes and studies economics in college’ ECONOMICS_MN, PATA_Davos_2020By CCR@IIXXI8January 23, 2020U.S. Treasury Secretary Steven Mnuchin sharply criticized the financial credentials of Swedish climate activist Greta Thunbergon Thursday, saying the 17-year-old should study economics at college...