He is an entertainer. He started out as a regular on a late night Seattle Comedy TV Show... Almost Live!. His most popular role at that time was “Speed walker”, a superhero who walked to crimes in progress. The Science Guy thing started out as a joke that stuck. He corrected the Almost Live host's pronunciation of gigawatt and the host retorted, “Who do you think you are—Bill Nye the Science Guy?”
He has a bachelor of science degree from 1977 and no other formal education since that time that I am aware of. He is just a typical Seattle Know-it-all liberal. I have been dealing with them all of my life