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Topic: United Nations Climate Action Summit

Ethiopia's Prime Minister Abiy Ahmed upon arrival at the European Council in Brussels on January 24, 2019. (EMMANUEL DUNAND/AFP/Getty Images)

Nobel Prize: Thunberg fans disappointed

Shira Tarlo
A layer of pollution can be seen hovering over Los Angeles, California (Getty/Frederic J. Brown)

The unspoken word at the climate summit

Lisa Song - ProPublica