Participants run at the “Half-Naked Marathon” at Olympic Forest park in Beijing, China, February 28, 2016. This annual running event which requires participants to run half-naked, was organized to promote environmentally friendly lifestyles. (Photo by Kim Kyung-Hoon/Reuters)

Israeli soldiers of the Search and Rescue brigade take part in a training session in Ben Shemen forest, near the city of Modi'in May 23, 2016. (Photo by Amir Cohen/Reuters)

Border between Sweden and Norway at Moldusen. An approximately 20-meter wide clearing in the forest separates the two Scandinavian nations, consequently cutting Finnskogen in two. Grue Finnskog 2016. (Photo by Terje Abusdal/The Washington Post)

Water pools on top of a water lily leaf after rain at Benchakitti Forest Park in Bangkok, Thailand on September 27, 2023. (Photo by Jorge Silva/Reuters)

Aerial view of sunbeam shining through mountain cave at Yueyan National Forest Park on August 27, 2024 in Yongzhou, Hunan Province of China. (Photo by Jiang Keqing/VCG via Getty Images)

Aerial photo shows a colorful metasequoia forest at Hongze Lake wetland scenic spot in Suqian, East China's Jiangsu province, November 3, 2024. (Photo by CFOTO/Future Publishing via Getty Images)

People watch a forest fire in Funchal, Madeira Island, Portugal, 09 August 2016. The fire has led to the evacuation of 400 people. Portugal remains on high alert as a wave of wildfires has swept the country with around 350 isolated fires affecting swathes of the countryside. (Photo by Gregório Cunha/EPA)

Fifth-grade students of the General Yermolov Cadet School get prepared before their first military tactical exercise on the ground, which includes radiation resistance classes, forest survival studies and other activities, in Stavropol, Russia, September 10, 2016. Picture taken September 10, 2016. (Photo by Eduard Korniyenko/Reuters)