A girl peers from between light decorations at a Christmas fair which opened ahead of the holiday season in Bucharest, Romania, Friday, November 25, 2022. Municipal authorities in the Romanian capital, quoted by local media, stated that holiday season city light decoration levels will remain at last year's level and use energy saving solutions. (Photo by Vadim Ghirda/AP Photo)

Global wildlife populations will decline by 67% by 2020 unless urgent action is taken to reduce human impact on species and ecosystems, warns the biennial Living Planet Index report from WWF (World Wide Fund for Nature) and ZSL (Zoological Society of London). From elephants to eels, here are some of the wildlife populations most affected by human activity. Here: The maned wolf is among the large mammals in the Brazilian Cerrado that are threatened by the increasing conversion of grasslands into farmland for grazing and growing crops. (Photo by Ben Cranke/Nature Picture Library/Alamy Stock Photo)

A reflection on waste liquid shows a tourist walking near the Blue mosque at the Sultanahmet Square on the first day of the Muslim fasting month of Ramadan in Istanbul on April 13, 2021. (Photo by Ozan Kose/AFP Photo)

The Aurora Australis, also known as the Southern Lights, glow on the horizon over waters of Lake Ellesmere on the outskirts of Christchurch on May 11, 2024. (Photo by Sanka Vidanagama/AFP Photo)

Nick Bull captured the Geminid meteor shower above Stonehenge in Wiltshire, UK on December 14, 2023. (Photo by Nick Bull/Picture Eexclusive)

A local boy plays football on Iracema Beach on June 11, 2014 in Fortaleza, Brazil. (Photo by Robert Cianflone/Getty Images)

Government officials in protective suits carry a mock coffin as they walk around a busy intersection during a coronavirus awareness campaign to remind people of the risk of contracting COVID-19 and to always obey health protocols to curb the spread of the outbreak in Jakarta, Indonesia, Friday, August 28, 2020. (Photo by Dita Alangkara/AP Photo)

People wade through a flooded road, due to monsoon rains and the recent typhoon Doksuri, in Balagtas, Bulacan province, Philippines on July 29, 2023. (Photo by Lisa Marie David/Reuters)