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Combo photo shows lights on (L) and off of Petronas Twin Towers before and during the Earth Hour event in Kuala Lumpur, Malaysia, March 30, 2019. (Xinhua/Zhu Wei)
Combo photo shows lights on (L) and off of Petronas Twin Towers before and during the Earth Hour event in Kuala Lumpur, Malaysia, March 30, 2019. (Xinhua/Zhu Wei)