In its early modern form, philosophy gave a decisive impetus to the science and technology that have transformed the planet and brought on the so-called Anthropocene. Can philosophy now help us understand this new age and act within it? The contributors to this volume take a broad historical view as they reflect on the responsibilities and possibilities for philosophy today. The term 'Anthropocene' signifies the era of the arrival of human beings as a force that affects global ecosystems in ways that are potentially disastrous for humanity itself, as well as for countless other species. This volume explores whether philosophy has meaningful tasks to fulfill in this unparalleled situation. Do philosophers need to reflect on new topics today? Do they need to think in new ways? Do they need new relationships to their own tradition? And are there concrete actions they should take, over and above philosophical reflection? The contributors to this volume thus take on the question of the relevance and responsibility of philosophy, drawing upon diverse legacies, in the current global situation.