  Years after its discovery in 1995 by CDF and D0, the top quark still
undergoes intense investigations at the Tevatron. Using up to the full Run~II
data sample, new measurements of top quark production and properties by the D0
Collaboration are presented. In particular, the first observation of single top
quark s-channel production, the measurement of differential ttbar
distributions, forward-backward ttbar asymmetry, a new measurement of the top
quark mass, and a measurement of the top quark charge are discussed.
