Conflict is at the heart of Tony Cragg’s 1983 sculpture ‘Spectrum,’ from which Lisson Gallery’s new summer show takes its title. Beautiful in its variety of color and inspired by the natural phenomenon of the color spectrum, it was assembled from sea plastic found on the shore, a decidedly ugly and unnatural phenomenon. Part of a series, this iteration spreads objects out on the floor like a carefully presented anthropological display that implicates throw-away culture. (On view in Chelsea Mon-Thurs, 11am – 4pm through August 27th. Masks and social distancing are required and visitor numbers are limited to 10 at a time.)