The Endangered Species Act is 40 years old.
President Nixon signed the landmark law designed to protect at risk species from extinction.
Now, four decades later, we can physically see its effects.
Scientists say Grizzly Bear numbers have recovered in the Yellowstone and Northern Continental Divide ecosystems.
There used to be only a dozen or so Bald Eagles nests in the entire state of Montana.
Now, our national symbol is a common sight.
"Look at the great successes we've had under this act," said USFWS Grizzly Bear Recovery coordinator, Chris Servheen."We need to celebrate those successes so we can move on and continue to help many other species that desperately need the support of the act."