468: Current number of endangered animal species in the United States.
176: Current number of threatened animal species in the United States.
476: Current number of endangered or threatened animal species in the United States with active recovery plans.
42: Percentage of endangered or threatened animal species in the United States in danger due to invasive species.
1.5: Number of degrees of average worldwide temperature rise since 1900.
2–10: Estimated number of degrees of average worldwide temperature rise before 2100.
8: Number of inches of average sea level rise since 1900.
854: Number of animal species listed as “critically endangered” by the International Union for Conservation of Nature in 1998.
2,129: Number of animal species listed as “critically endangered” by the International Union for Conservation of Nature in 2012.
Sources: The International Union for Conservation of Nature Red List, The National Wildlife Federation, U.S. Fish & Wildlife Service Endangered Species Database.