Up First briefing: smoke and heat waves; French protests; gravitational waves

June 29, 2023
Haze from Canadian wildfires blankets the Chicago skyline as seen from the city

Canadian wildfire smoke and heat make for unhealthy U.S. air. Protests erupt in France after police kill a teen boy during a traffic stop. A new physics discovery could help us understand black holes.

(Image credit: Kathleen Foody/AP)



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