  I review recent studies of strangeness content in the nucleon pertaining to
the flavor-singlet $g_A^0$, the $\bar{s}s$ matrix element and the strangeness
electric and magnetic form factors $G_E^s(q^2)$ and $G_M^s(q^2)$, based on
lattice QCD calculations. I shall also discuss the relevance of incorporating
the strangeness content in nuclei in regard to strange baryon-antibaryon
productions from proton-nucleus and nucleus-nucleus collisions at SPS and RHIC
energies.
