Please select an issue. Volume 6 Issue 4 - January 2004 (PDF) Volume 6 Issue 3 - December 2003 (PDF) Volume 6 Issue 2 - November 2003 (PDF) Volume 5 Issue 5 - February 2003 (PDF) Volume 5 Issue 4 - January 2003 (PDF) Volume 5 Issue 3 - December 2002 (PDF) Volume 5 Issue 2 - November 2002 (PDF) Volume 5 Issue 1 - October 2002 Volume 4 Issue 5 - March 2002 Volume 4 Issue 4 - February 2002 Volume 4 Issue 3 - January 2002 Volume 4 Issue 2 - November 2001 Volume 4 Issue 1 - October 2001 Volume 3 Issue 6 - March 2001 Volume 3 Issue 5 - February 2001 Volume 3 Issue 4 - January 2001 Volume 3 Issue 3 - November 2000 Volume 3 Issue 2 - October 2000 Volume 3 Issue 1 - September 2000 Volume 2 Issue 4 - March 1999 Volume 2 Issue 3 - January 1999 Volume 2 Issue 2 - December 1998 Volume 2 Issue 1 - October 1998 The Challenger is the official Newsletter for the Energy Challenge.