The article discusses the phenomenon of entanglement sudden death (ESD), a new form of dissipation in quantum systems where the correlation between two qubits can be degraded by environmental noise in a finite time, rather than following the typical half-life decay. This effect, labeled ESD, challenges the fundamental resource of quantum information and is central to discussions on the Einstein-Podolsky-Rosen paradox and Schrödinger's Cat. The authors review recent progress in understanding ESD, including theoretical predictions and experimental confirmations. They highlight that ESD occurs in various scenarios involving atomic, photonic, and spin qubits, and continuous Gaussian states. Despite its experimental validation, the dynamics of ESD remain poorly understood, and there is no general preventive measure. The article also explores methods to mitigate ESD, such as quantum error correction and symmetry-based approaches, and discusses the implications for quantum memory and control. Future research directions include studying non-Markovian noises, entanglement in systems with more than two states, and topological approaches to understanding N-party entanglement dynamics.The article discusses the phenomenon of entanglement sudden death (ESD), a new form of dissipation in quantum systems where the correlation between two qubits can be degraded by environmental noise in a finite time, rather than following the typical half-life decay. This effect, labeled ESD, challenges the fundamental resource of quantum information and is central to discussions on the Einstein-Podolsky-Rosen paradox and Schrödinger's Cat. The authors review recent progress in understanding ESD, including theoretical predictions and experimental confirmations. They highlight that ESD occurs in various scenarios involving atomic, photonic, and spin qubits, and continuous Gaussian states. Despite its experimental validation, the dynamics of ESD remain poorly understood, and there is no general preventive measure. The article also explores methods to mitigate ESD, such as quantum error correction and symmetry-based approaches, and discusses the implications for quantum memory and control. Future research directions include studying non-Markovian noises, entanglement in systems with more than two states, and topological approaches to understanding N-party entanglement dynamics.