Steve,
The words "thank you" can not begin to express the gratitude that the natural world owes you for your life's work.
If this planet is to be saved from the downward spiral it is in now, some one like you will be on the front lines of that battle: an enviornmentalist and conservationist who is passionate, carsimatic, and dedicated, that will expose the world to the natural wonders of planet earth and the troubles they are facing.
Everyone knows you have helped saved millions of wildlife creatures, but you also have help save millions of humans. The world can only hope someone picks up where you left off.
My sincerest "thank you",
Josh Wells
Florida USA