Born in San Francisco, Glantz was a volunteer reporter in the news department of Pacifica's flag-ship station, KPFA-FM in Berkeley while studying journalism at the University of California, Berkeley. He went on to serve as KPFA's California State Capitol reporter in Sacramento, where he won the California Journalism Award for radio in 2000 for his reporting on the California State Legislature. That year he was a founding producer of Pacifica Radio's nationally-syndicated daily newscast, Free Speech Radio News (FSRN).

In the course of a global tour to recruit locally-based correspondents for FSRN, Glantz filed reports from Denmark, France, Egypt, Jordan, Turkey, India, Indonesia, Vietnam and South Korea.

Glantz has visited Iraq three times during the U.S. occupation: for a month immediately after the fall of Saddam Hussein in March 2003; from February to May 2004; and during the legislative elections, in January 2005.

Since returning from his last visit to Iraq, Glantz has devoted considerable attention to the damaging effects of the war on American veterans. He has filed numerous reports delving into the issue of post-traumatic stress disorder and related problems, as well as detailing the difficulties that veterans have experienced in their efforts to obtain services from the Veterans Administration.

In September 2007, KPFA Radio launched a new interactive website, Warcomeshome.org, and hired Glantz as editor. The website features an archive of Glantz's audio stories, photos, transcripts, and a blog by Glantz, as well as resources for veterans and activists. Glantz's second book, The War Comes Home, is scheduled to be published by the University of California Press in 2008.

Glantz and KPFA Morning Show host Aimee Allison co-anchored a live broadcast of the Iraq War Winter Soldier event in Silver Spring, Maryland as the Pacifica Radio network suspended regular programming for three days, from March 14 through March 16, 2008.

Glantz lives in Berkeley with his wife, journalist Ngoc Nguyen. His father is Stanton Glantz, Ph.D, a leading researcher and activist on the health effects of tobacco.[1][2]

In 2005 Aaron Glantz published his book How America Lost Iraq, in which he gives a voice to the Iraqis and tells how the U.S. government squandered, through a series of blunders and brutalities, the goodwill with which most Iraqis greeted the American invasion and the elation they felt at the fall of Saddam Hussein.

In 2008 the book Iraq & Afghanistan was published authored by Glantz in collaboration with Iraq Veterans Against the War. The book dovetails with the Iraq & Afghanistan event detailing allegations of military misconduct among US soldiers in Iraq.