Human additions of sound and light continue to interest us as aspects of global change, as we wrote in . Broadening the scope of global change to include illumination and noise . SEED Magazine 23 Nov: 2009. We draw attention to Oecologia. 2014; 176(4): 917–931, PMCID: PMC4226844 Human alteration of natural light cycles: causes and ecological consequences by Kevin J. Gaston, James P. Duffy, Sian Gaston, Jonathan Bennie, and Thomas W. Davies.