  We review a unique prediction of Quantum Chromo Dynamics, called color
transparency (CT), where the final (and/or initial) state interactions of
hadrons with the nuclear medium must vanish for exclusive processes at high
momentum transfers. We retrace the progress of our understanding of this
phenomenon, which began with the discovery of the $J/\psi$ meson, followed by
the discovery of high energy CT phenomena, the recent developments in the
investigations of the onset of CT at intermediate energies and the directions
for future studies.
