Resurrecting technicolor

The author explains how the technicolor is resurrected in the light of new trends in strong coupling gauge theories. Basic idea and ingredients of technicolor are critically reviewed. The author describes the scale- invariant technicolor model characterized by the ladder Schwinger-Dyson equation. It is found that the theory has a non-trivial ultraviolet fixed point with large anomalous dimension, which naturally suppresses the flavor-changing neutral currents and at the same time raises the mass of the problematic light technipions. The model is expected to predict a dilation (technidilaton), a light JPC = O++ pseudo Nambu-Goldstone bosons associated with the spontaneous breakdown of the scale invariance, whose dynamical issues are argued in detail