In contemporary debates on sustainable development, the historical and philosophical roots of planetary thinking are often overlooked. One of the early and visionary contributors to this discourse was Vladimir Vernadsky (1863–1945), whose concepts of the biosphere and noosphere offer an approach to the Earth that integrates scientific insight with ethical responsibility. Although Earth system science did not yet exist in his time, Vernadsky’s concepts of the biosphere and noosphere anticipated a systemic understanding of the Earth as shaped by both natural processes and human thought. His idea of the noosphere—the realm of reason and scientific activity— presents a model of global transformation grounded in knowledge, responsibility, and the evolving relationship between humanity and the planet.
