In this talk we analyze strategies to protect and recover information when entangled systems are subjected to unavoidable decoherence mechanisms.

We focus on the situations in which some of the information lost to the reservoirs can be recovered through measurements performed on the environment of the affected system. In particular, we use the quantum trajectories method to show how much of the dynamics of the entanglement of the system can be inferred by such measurements with the advantage that in some cases - like pure dissipation - this method corresponds to a clear physical picture.

We also show that by combining environment measurements with smart encoding of qubits and simple feedback mechanisms one is able to locally protect the entanglement shared by remote parties.