Why in recent years human rights is being used more than the term natural rights
The idea of rights is central to our moral vocabulary. Over the past century, however, the concept of rights has changed significantly: the original faculties-based natural rights doctrine is being replaced by a needs-based and dependency-based human rights doctrine. This change is best represented in the sharp contrast between rights claims expressed in the Declaration of Independence and the United Nations Declaration of Human Rights. This shift in theory has and will continue to have broad practical consequences.
The human rights view, in understanding human beings as needy and dependent rather than as distinctively capable of responsible liberty, leads to the endless proliferation of rights claims, which become self-negating. In a situation where everyone has a right to everything, there can be no justice. If the idea that we possess rights by virtue of our rational nature is to remain viable as the core of our understanding of justice, the identification of those rights must be grounded in a defensible account of our morally distinctive nature and subject to a sound limiting principle.