Earth Day Match Extended! Our Board of Directors and President's Circle members were so impressed by the support we received, they've offered up an extra $50,000 in funds to match any donations made through April 30th 2-for-1 up to a total of $200,000!

Please give today, while your generous donation will make triple the impact in saving wildlife.

The Endangered Species Act 101

Signed into law in 1973, the Endangered Species Act (ESA) aspires to prevent extinction, recover imperiled plants and animals, and protect the ecosystems on which they depend. For a basic overview of what the ESA does, read this Endangered Species Act primer. 

Download the PDF »
(0.27 MB)

You may also be interested in:

In the Magazine
The wood stork rebounds; hope for fishers in the far west; the numbers on Yellowstone wolves; and more.
Defenders' staff get ready to release black-footed ferrets. From left: Russ Talmo, Kylie Paul, Charlotte Conley and Jonathan Proctor, Photo: Kylie Paul/DOW
In the Magazine
Defenders' team helps reintroduce endangered black-footed ferrets to tribal lands in the West.
In the Magazine
After demanding the opportunity to manage wolves within their borders, Idaho is completely blowing it. Instead of continued recovery, what we’re seeing is a war on wolves.