The secretive indri (Indri indri) of Madagascar, the largest living lemur. It is also critically endangered and highly evolutionarily distinct with no close relatives, which makes its branch one of most precarious on the mammal evolutionary tree. In the likely event that the indri goes extinct, we will lose 19m years of unique evolutionary history from the mammal tree of life. (Photo by Pierre-Yves Babelon/Aarhus University)

A stroller walks his dogs in an autumnally colored forest in Cuxhaven, nothern Germany on November 7, 2018. (Photo by Patrik Stollarz/AFP Photo)

Peahens seen at Motilal Nehru Marg during lockdown to curb the spread of coronavirus, on April 19, 2020 in New Delhi, India. (Photo by Arvind Yadav/Hindustan Times via Getty Images)

Artists wear colourful “deconfinement hats” made of paper mache and inspired by Song dynasty headwear, for social distancing, at 59 Rivoli gallery in Paris as it prepares a general reopening later in the week, following the outbreak of the coronavirus disease (COVID-19) in France, June 3, 2020. (Photo by Benoit Tessier/Reuters)

A woman pushes a cart during a protest against racial inequality and call for defunding of Seattle police, in Seattle downtown, Washington, U.S. June 14, 2020. (Photo by Goran Tomasevic/Reuters)

A woman drinks at a bars area in Clapham, after the reopening of commercial activities following the outbreak of the coronavirus disease (COVID-19), in London, Britain, July 4, 2020. (Photo by Hannah McKay/Reuters)

A vendor pushes an improvised cart with a woman and merchandise along a rarely used rail track in Bangkok, Thailand, Thursday, June 25, 2020. Daily life in the capital slowly returns to normal as the Thai government eases many restrictions imposed weeks ago to combat the spread of COVID-19. Though emergency regulations require the use of face masks in public, some residents have become apathetic as Thailand has record zero local transmission for over three weeks. (Photo by Gemunu Amarasinghe/AP Photo)

A Sudanese woman repairs damages to her house, after torrential rain lead to landslides and flash floods, in the town of Umm Dawan Ban, southeast of the capital Khartoum on August 2, 2020. (Photo by Ashraf Shazly/AFP Photo)