Adam G. McCollum (2019 PhD), faculty member Eric Bakovic, graduate student Anna Mai, and Eric Meinhardt (2020 PhD) have just published a new paper in the journal Phonology, “Unbounded circumambient patterns in segmental phonology.” The authors present an empirical challenge to a recent assertion that only tonal spreading patterns can be unbounded circumambient, meaning that the determination of a phonological value may depend on information that is an unbounded distance away on both sides. They focus on a demonstration that the ATR harmony pattern found in Tutrugbu is unbounded circumambient, and they also cite several other segmental spreading processes with the same general character. They discuss implications for the complexity of phonology and for the relationship between the explanation of typology and the evaluation of phonological theories.