Addressing collisions between environmental protection and competing economic and social interests often constitutes the very core of environmental cases. At the constitutional level, a balancing approach based on the doctrine of proportionality is frequently employed to resolve contradictions between conflicting values. In this article, I demonstrate how the proportionality doctrine in its traditional meaning can be applied to balancing interests in environmental cases. Then I bring to the forefront two innovative ways of engaging proportionality in the environmental protection; one employing proportionality as an interpretative instrument with the power to help determining the scope and content of the right to environment; and the other adjusting proportionality to the form of eco-proportionality, offering a restructured framework to rule the human-nature relationship., Hana Müllerová., and Obsahuje bibliografické odkazy