Thunberg brushes off mockery from US finance chief

Climate activists Luisa Neubauer, Greta Thunberg, Isabelle Axelsson and Loukina Tille, from left, arrive for a news conference in Davos, Switzerland, Friday, Jan. 24, 2020. The 50th annual meeting of the forum is taking place in Davos from Jan. 21 until Jan. 24, 2020