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 man gets stuck under debris at a damaged site after an airstrike in the Saqba area, in the eastern Damascus suburb of Ghouta, Syria, January 9, 2018. (Photo by Bassam Khabieh/Reuters)

A villager attends a spring ploughing ceremony in Jiaru Village, Gurong Town, Lhasa, southwest China's Tibet Autonomous Region, March 16, 2020. Traditional spring ploughing ceremonies took place in Tibet's major cultivation areas on Monday to pray for a year with good harvests. (Photo by Zhan Yan/Xinhua News Agency)

Afghan tea seller Farooq Shah, center, fills kettles with tea for customers at a market place in Kabul, Afghanistan, Wednesday, December 4, 2019. (Photo by Altaf Qadri/AP Photo)

An injured demonstrator receives aid during a protest against a lockdown planned for the capital this weekend to halt the spread of the coronavirus disease (COVID-19) in Belgrade, Serbia on July 7, 2020. (Photo by Marko Djurica/Reuters)

Buddhist monk Wilatha holds a rescued Burmese python at his monastery that has turned into a snake sanctuary on the outskirts of Yangon, Myanmar, November 26, 2020. Wilatha is trying to play a part in saving scores of snakes that might otherwise be killed or destined for the black market. (Photo by Shwe Paw Mya Tin/Reuters)

A man carries away an injured girl while walking through debris past in the Achrafiyeh district in the centre of Lebanon's capital Beirut on August 4, 2020, following an explosion at the nearby port of Beirut. (Photo by The Mega Agency/Stringer)

An official (R) measures the size of a whale shark (Rhincodon typus) carcass on the shore of Teluk Betung beach in West Sumatra, Indonesia, 08 October 2019. The dead whale shark washed ashore at Teluk Betung beach on 07 October 2019. (Photo by Rajo Batuah/EPA/EFE)