Non-profits play an outsized role in the revitalization of the LA River, some in the arts—more than those mentioned here:  https://nonprofitquarterly.org/policysocial-context/26026-engaging-in-an-unlikely-manner-artists-as-environmental-stewards.html?utm_source=hs_email&utm_medium=email&utm_content=17312856&_hsenc=p2ANqtz-9FBKGfRwzTp1Bs-IhwLbleGBaea3AWSsZsdTd5ig8l83fCH7yllBoAbsMWl4wDQDyPRBlndBiN-Pp1tz34wizEu-LwQ0h9en4I6cN5GFFK91iNnwQ&_hsmi=17312856