Explore the statistical mechanics of developed turbulence in this comprehensive lecture from the Bangalore School on Statistical Physics. Delve into topics like Kolmogorov's similarity hypotheses, energy cascades, and the energy spectrum. Examine the challenges of solving turbulence, including predicting small-scale fluctuations and large-scale dissipation. Investigate the connection between turbulence and phase transitions, focusing on the laminar-turbulent transition in pipe flow. Learn about innovative approaches using computer simulations and predator-prey dynamics to model turbulent behavior. Discover the universality class of the laminar-turbulent transition and its relation to directed percolation. Gain insights into Feynman's vision of renormalization group theory applied to turbulence and the current state of turbulence research. The lecture concludes with a Q&A session, providing an opportunity to deepen understanding of this complex subject.