Mr. Cool: How Minnesota's Will Steger, a 30-year veteran of polar exploration and global-warming activism, became Hollywood's unlikeliest "It" boy. April 2007

Leaping Tiger, Drowning River: China is the country environmentalists will watch in the 21st century. Join Patrick Symmes on a raft trip in Yunnan, whose wild rivers could be the next victims of eternal dam-nation. April 2007

Ain't it Just Grand: Kevin Fedarko profiles conservation warrior and river runner Martin Litton on a trip down the Colorado. June 2005

Footprints in the Last Wild Place: Peter Matthiessen writes on the possible effect of drilling in ANWR. February 2003

Terminal Ice: Ian Frazier floats among icebergs and contemplates our ability to comprehend all this melting ice. October 2002

One Nation, Under Ted: Ted Turner turns his mega-ranches into conservation habitat. December 2001

King of the Dirtbags: Patagonia founder Yvon Chouinard's ethic on climbing and clothing. November 2001

For God so Loved the World: The religious green movement, before it got big. March 2001

The Post Communist Wolf: David Quammen tracks wolves in Romania while describing the strange brew of historical events that kept them around, and the future that threatens them. December 2000

Afterburn: The Yanomami of the Amazon, the world's largest Stone Age tribe, need their rainforests to stop burning. July 1998

Hello, I Must Be Going: Bill McKibben fishes with scientists off Newfoundland while dishing on the decline of Cod. December 1997

Edward Abbey: Abbey's bad behavior and big-hearted ideas live on. October 1997

The High Cost of Being David Brower: Environmental archdruid David Brower sacrificed, alienated, and empowered others in his fight to preserve wilderness. December 1995

Postcard from the Apocalypse: Lakes of crude and flaming geysers in Kuwait, left by a retreating Iraqi army, burn on as one of the greatest environmental catastrophes of our generation. December 1991

A Clot in the Heart of the Earth: Fishermen from around Prince William Sound band together to fight a losing war after the 1989 Valdez oil spill. June 1989

High Priest of the Low-Flow Shower Heads: Green guru Amory Lovins, of the Rocky Mountain Institute, knows a lot of little stuff can help in a big way. September 1987

The Shame of Escobilla, Part II: Tim Cahill on a press trip to Baja for the opening of a new sea turtle "research lab". He stays past his welcome and discovers it's a front for a turtle butcher shop. November 1982

A Staging of Snow Geese: Lopez travels to Tule Lake, CA to witness the migration of hundreds of thousands of wintering snow geese, all the while weaving in the history of how habitat change and hunting affect the birds. October 1982

Between the Lines: Outside editor in chief Larry Burke defines wilderness and then calls on readers to limit the role of the Bureau of Reclamation. October/November 1978