We live in bewildering times. Unusual politicians and political movements are rising to the fore, geopolitical maps are being redrawn, old certainties are collapsing, and knowledge — both good and bad — is flowing differently from ever before. Based on the belief that effective communication of science requires understanding of our communication landscape, in this article I offer a brief `technological tectonics' of our current communication landscape, exploring how shifts in communication technologies have made certain politics and certain flows of knowledge possible. I then offer three paths for action — in reflection, practice and advocacy — for those interested in the communication of science.