+The Renormalization Group offers a lens to understand how systems behave across varying scales. It tracks how parameters evolve when microscopic details are coarse-grained, revealing universal behavior near [Phase Transitions](/wiki/phase_transition) in fields like [Quantum Field Theory](/wiki/quantum_field_theory).
+## See also
+- [Statistical Mechanics](/wiki/statistical_mechanics)
+- [Critical Phenomena](/wiki/critical_phenomena)
+- [Scale Invariance](/wiki/scale_invariance)