  QCD and Spin physics are playing important role in our understanding of
hadron structure. I will give a short overview of origin of hadron structure in
QCD and highlight modern understanding of the subject. Jefferson Laboratory is
undergoing an upgrade that will increase the energy of electron beam up to 12
GeV. JLab is one of the leading facilities in nuclear physics studies and once
operational in 2015 JLab 12 will be crucial for future of nuclear physics. I
will briefly discuss future studies in four experimental halls of Jefferson
Lab.
