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U.S. Secretary of State John Kerry signs the Paris Agreement on April 22. (@JohnKerry / Twitter)

The terms of the historic global pact were agreed upon by 195 countries on Dec. 12, 2015, at the United Nations Climate Change Conference in Paris, but Friday – Earth Day – marks the first day of the yearlong signing period.

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Movies and music galore, Harlem Renaissance murals, and an Earth Day celebration; Chicago Tonight knows what's going on this weekend.

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