Designed to protect critically imperiled species from extinction as a consequence of economic growth and development.
Endangered species Act
ESA Success Numbers According to the National Research Council, the Endangered Species Act has saved hundreds of species from extinction.
recovering and thriving plant and animal species in the United States and its territories.
The U.S. Fish and Wildlife Service
A study published in the Annual Review of Ecological Systematics calculated that 172 species would potentially have gone extinct during the period from 1973 to 1998 if Endangered Species Act protections had not been implemented.
172 Species Saved
Costs to Benefits
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According to the U.S. Fish and Wildlife Service, 99 percent of the species ever listed under the Endangered Species Act remain on the planet today.
with which to implement the Endangered Species Act -- the same price as approximately seven miles of interstate highway. This represents an average cost of merely 48 cents per American per year.
of the top 150 most popular prescribed drugs are linked to discoveries of natural compounds in the wild, with an annual economic value of $80 billion.
Levels of Endangerment
Least concern: Lowest risk. Does not qualify for a higher risk category. Widespread and abundant taxa are included in this category.
Near threatened: Likely to become endangered in the near future.
Vulnerable: High risk of endangerment in the wild.
Endangered: High risk of extinction in the wild.Critically endangered: Extremely high risk of extinction in the wild.
Extinct in the wild: Known only to survive in captivity, or as a naturalized population outside its historic range.