
Photo: © Holger Ehlers
When the first endangered species list was created 50 years ago, it started out with 78 animals. The grizzly bear and bald eagle were among American icons that made that first list.
Today, it counts 1,400 animals and 900 plants – an expansion that reflects more petitions for listings over time, but also the fact that threats to habitats and ecosystems have become more widespread and complex.
In the early days of the Endangered Species Act, we could more easily identify the threat and go straight to the source. When DDT was thinning egg shells, killing embryos and endangering multiple bird species, we worked to curb applications of the harmful pesticide. After a federal ban against DDT, the problem was solved.
Today, threats are more likely to come from broad landscape changes that occur when growing populations push housing and commercial developments outward, energy development and large-scale farming fragment and encroach on habitats, and climate change-related droughts and wildfires degrade entire ecosystems. Read More