Glider pilots challenge some of nature's most extreme weather conditions over the Sierra Nevada.
The world's oldest male chimpanzee expresses himself.
A Kansas couple finds happiness underground.
New Mexico teaches Wyoming how to curb substance abuse.
The father of a slain mother and daughter reflects on what may have gone wrong in Yosemite.
A woman goes blind while trying to write the ultimate history book on Alaskan aviation, but her legacy lives on.
Lynn Hill along with Alex Lowe discuss climbing out of the crib and on to the world's most challenging mountains.
A bold effort to save a redwood tree alters three lives.