Biography
Greenberg took a doctor's degree witharound Political Science in 1969, & has taught at the University of Wisconsin since 1975. His 1st anthology was Political Science Fiction (1974, by having Patricia Warrick), intended to become utilized as a teaching answer, so continuing by owning a sequence of training anthology titles under the series title Across Science Fiction. In the late Lxx's Greenberg began partnering with Joseph D. Olander on more conventional SF anthologies.

He shared a 2005 Prometheus Special Award with Mark Tier for the anthologies Give Me Liberty & Visions of Liberty.

Greenberg occasionally team using a second editor, splitting a duties of story choice, redaction, right of first publication searches, & a treating of creator royalties. Major partners include Isaac Asimov (127 anthologies), Charles G. Waugh, Jane Yolen, and Robert Silverberg.