Inter Press Service: One third of reef-building corals already face extinction because of climate change, the first-ever global assessment has found. Reefs are made up of hundreds of coral species, and a two-year study to determine the current status of corals has discovered that 231 of the 704 species assessed will be “red-listed” Thursday. This means these 231 species meet the International Union for Conservation of Nature (IUCN) Red List Criteria for species at risk of extinction in the near …