Donald Kennedy

饰：Himself

Laurence S. Kalkstein

饰：Himself

Richard Somerville

饰：Himself

Jonathan Patz

饰：Himself

Tom Wigley

饰：Himself

Kevin Trenberth

饰：Himself

Paul R. Epstein

饰：Himself

Jonathan Foley

饰：Himself

Scott Pattee

饰：Himself - USDA

Daniel Schrag

Daniel Schrag

饰：Himself

斯蒂芬·施耐德

Stephen Schneider

饰：自己

Paul Dana

饰：自己

威利·纳尔逊

Willie Nelson

饰：自己

Kerry Emanuel

饰：Self,(as Kerry Emanuel PhD)

Susan Joy Hassol

Susan Joy Hassol

饰：Self

Terry Root

Terry Root

饰：Self,(as Terry L. Root PhD)