from wikipedia:  

William Ernest "Bill" McKibben (born 1960)[1] is an American environmentalist, author, and journalist who has written extensively on the impact of global warming. He is the Schumann Distinguished Scholar at Middlebury College.[2] In 2010, the Boston Globe called him "probably the nation's leading environmentalist" [3] and Time magazine described him as "the world's best green journalist."[4]


He founded 350.org, whose mission we, in San Antonio, are joining, 

350.org is building a global grassroots movement to solve the climate crisis.Our online campaigns, grassroots organizing, and mass public actions are led from the bottom up by thousands of volunteer organizers in over 188 countries.

