As the Intergovernmental Platform on Biodiversity and Ecosystem Services (IPBES) prepares to reveal the state of the world's flora and fauna, this is what we know so far:  – Two species of vertebrates have disappeared each year for an average of a century
– The Earth is facing a "massive extinction", the first since the disappearance of dinosaurs about 65 million years ago, the sixth in 500 million years
– About 41% of amphibians and more than a quarter of mammals are threatened with extinction
– Nearly half of coral reefs have disappeared in the last 30 years  – The populations of 3,706 species of fish, birds, mammals, amphibians and reptiles have decreased by 60% in just 40 years from 1970
– 25,821 of the 91,523 species listed on the "Red List" established by the International Union for nature conservation (IUCN) and updated in 2017, were classified as "threatened"
– Of this total, 5,583 were "severely" endangered, 8,455 "endangered" and 11,783 "vulnerable"
– – The number of African elephants has dropped by about 111,000 between 2006 and 2016, to 415,000 specimens
– Our planet has about 8.7 million species of plants and animals according to estimates, of which 86% of terrestrial species and 91% of marine species still to be discovered
– Of those that are known and listed, 1,204 mammal species, 1,469 birds, 1,215 reptiles, 2,100 amphibians and 2,386 fish are threatened  – 1.414 insect species, 2.187 molluscs, 732 crustaceans, 237 corals, 12.505 plants, 33 mushrooms and six brown algae are also under threat
– Economic losses from deforestation and forest degradation account for up to 3.6 trillion Euro ($ 4.5 trillion)
– A conference of the Convention on Biological Diversity (CBD) from the Rio Earth Summit in 1992, developed in Nagoya in 2010 Japan a 20-point program to halt biodiversity loss by 2020
– These "Aichi Targets" aim, among other things, to halve the rate of habitat loss, expand conservation areas terrestrial and aquatic, preventing the extinction of threatened species and restoring at least 15% of degraded ecosystems
Sources: WWF Living Planet Report, IUCN Red List, PLoS Biology scientific journal, Proceedings of the IUCN Red List National Academy of Sciences, CBD, Economics and Ecosystems Economics Task Force (TEEB)