I introduce the framework of Quantum Darwinism, where only "the fittest" information about a quantum system is broadcasted in a redundant, massive, way into the huge collection of degrees of freedom which we typically describe as the environment, which here plays an active role. I explain how the environment is able proliferate a classical description of a particular system observable information such that many observers accessing independent fragments of the surroundings of the system can agree on the independent reality of such "objective" property. Finally I briefly highlight our main contributions to this fascinating topic.