Gaia, a Baltimore-based artist, is known for employing a wallpaper-like technique using wheat-paste to adhere large-scale linoleum prints onto billboards and building exteriors. Working in cities that range from Baltimore and San Francisco to Amsterdam and Seoul, Gaia is one of a legion of anonymous street artists who take the urban environment as a platform for creative expression and social activism. Through artistic interventions, Gaia, who operates under a pseudonym that refers to the Greek earth goddess, has explored such issues as immigration, segregation, the need to foster the presence of nature within urban contexts as well as the economic motivations that can weaken communities through irresponsible development.