“It always starts with conversation, with dialogue, with inspiration.” Working out of his Berlin studio, artist Tomás Saraceno creates interactive installations, immersive architectural interventions, and participatory community projects that research how to best steward the planet and cohabitate with all its forms of life. Watch Tomás Saraceno (@studiotomassaraceno) in “Realms of the Real,” the latest episode of Art21’s acclaimed series, “Art in the Twenty-First Century,” for free: https://art2