  The top quark, discovered in 1995 by the CDF and D0 collaborations at the
Tevatron proton antiproton collider at Fermilab, has undergone intense studies
in the last 20 years. Currently, CDF and D0 converge on their measurements of
top-antitop quark production cross sections using the full Tevatron data
sample. In these proceedings, the latest results on inclusive and differential
measurements of top-antitop quark production cross sections at the Tevatron are
reported.
