Al Gore, Robert Redford and Tracy Chapman (who rocked the house!) were present to mark the 20th anniversary of the award. Each year the Goldman Prize recognizes environmental heroes from the six inhabitable continents with an award of $150,000. Because all obstacles seem to be in the way of the extraordinary award recipients, attendees inevitably leave feeling like they could and should be doing more in their own communities (no matter how much they are already doing). It is a humbling evening of education.