Seventeen-year-old Swedish climate activist Greta Thunberg made a dramatic speech Tuesday at the World Economic Forum in Davos, Switzerland.
In her address, she called for a public and private sector divestment from fossil fuel companies
"Immediately end all fossil fuel subsidies and immediately and completely divest from fossil fuels. We don't want these things done by 2050, or 2030 or even 2021 — we want this done now," she said.
U.S. Treasury Secretary Steven Mnuchin mocked the teenager on Thursday during a press briefing in Davos.