Mural in Downtown S.F. Depicts Swedish Teen Climate Activist Greta Thunberg SAN FRANCISCO (KPIX) -- The newest addition to the San Francisco skyline is a work of art -- a mural depicting Swedish teenager Greta Thunberg, designed to draw attention to climate change. Andres "Cobre" Petreselli, an internationally renowned artist, is painting the activist teen with big blue eyes and a Mona Lisa smile.