Interview: Earth Hour 2021 a critical moment to reverse nature loss, says WWF International

Combo photo taken on March 27, 2021 shows night view of Science World before (up) and during (down) the Earth Hour activity in Vancouver, British Columbia, Canada. As lights around the world turn off at 8:30 p.m. local time on Saturday to mark Earth Hour 2021, World Wildlife Fund (WWF) International calls for urgent action to turn the tide and secure a nature-positive world by 2030. This year's event shines a spotlight on the perilous state of the planet, urging individuals, leaders and environmentalists to set nature on the path of recovery. (Photo by Liang Sen/Xinhua)