goldman environmental prize-winning family has grown. >> reporter: 6 winners every year, at the royal opera house, doug and john goldman are all involved, richard goldman, spoke in 2009. >> here's to the next 20 years of inspiration. >> reporter: it has honored 194 activists from 89 countries who have used the prize to expand their work. >> much has been accomplished over the past 30 years, add to that list, the astounding selection of the 2016 when her, as president of the nation of slovakia. >> it will help with the work we are doing, drawing attention to some of the issues, and raising awareness. >> this environmental prize is so important, recognizing the work of people around the world who often go unrecognized. >> reporter: former vice president al gore praised the passion of those who kept up the fight. >> remember that the passion for social justice, the passion for environmental justice, the passion for change, the passion to do the right thing, is itself a sustainable resource. >> reporter: their vision helping to keep that passion for protecting the planet alive. >> [ applause ]>> reporter: and the six prize winners will be