Activists of the World Wildlife Fund (WWF) take a selfie with St. Basil's Cathedral on Red Square during the Earth Hour campaign in Moscow, capital of Russia, on March 25, 2017. (Xinhua/Evgeny Sinitsyn)
Activists of the World Wildlife Fund (WWF) take a selfie with St. Basil's Cathedral on Red Square during the Earth Hour campaign in Moscow, capital of Russia, on March 25, 2017. (Xinhua/Evgeny Sinitsyn)