We are currently in the midst of the sixth mass extinction in Earth’s history. While extinction is a natural process, the current extinction rate is at least one thousand times the historical rate indicated by the fossil record. Blame for this sixth mass extinction can be placed squarely on humans. Habitat destruction, climate change, pollution, exploitation, and proliferation of non-native species—driven by human overpopulation and overconsumption—have resulted in a catastrophic loss of biodiversity.

One of the best tools we have for fighting species loss is the United States Endangered Species Act. This is our nation’s most powerful environmental law, and since it was passed in 1973, the Act has been 99 percent successful at preventing the extinction of listed species. But many plant and animal species scientists consider imperiled have not been listed under the Endangered Species Act. Moreover, thanks to a loophole in the listing process, even species deemed deserving of listing must often wait years on the candidate list before they are protected. Some of these species have gone extinct while awaiting listing.

We have an energetic and dogged campaign to usher imperiled species onto the legal ark of the Endangered Species Act and then use the Act’s full powers to ensure those species’ survival and recovery. We fight for the imperiled species that don’t have the luxury of time.