Time magazine announced its 2019 "Person of the Year" Wednesday -- Sweden's teenage climate change activist Greta Thunberg.

The magazine said her efforts -- which included sailing across the Atlantic Ocean to this week's COP25 climate conference in Spain, and crossing the ocean in a similar manner in August to get to the U.N. General Assembly -- have focused great attention on the issue of climate change, especially among the world's young people.

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