Rivane Neuenschwander (born 1967) is a Brazilian artist. She is known for her ephemeral and engaging work that explores language, nature, geography, the passing of time and social interactions. At times her works are interactive, involving viewers in spontaneous and participatory actions. In her installations, films and photographs, Rivane Neuenschwander employs fragile unassuming materials to create aesthetic experiences, a process she describes as "ethereal materialism". “When I was starting off, I was very interested in the ephemeral, in quotidian materials that disappear or are subject to entropy, which is how my art got stuck with labels like ‘ethereal materialism,’" she says about her own work.