Forgive me for not reading 1/2 of the prior posts but has Jonathan Bird been mentioned? He is widely viewed on PBS albeit with a bias towards the young but he crosses the generations to some extent. Other than his travel budget, where he goes an most of what he does is within the scope of mere mortals. While he has yet to reach mass celebrity status like Cousteau/Nelson he may be the best poster boy we have going right now.
If you get a chance to see him speak at a conference, screening etc be sure to go, he's very entertaining.
Pete
If you get a chance to see him speak at a conference, screening etc be sure to go, he's very entertaining.
Pete