  We present a variety of weak lensing results based on the ongoing analysis of
R_C-band imaging data from the Red-Sequence Cluster Survey (RCS). We briefly
discuss the weak lensing signal induced by intervening large scale structure
(cosmic shear), and study the properties of the dark matter halos surrounding
galaxies with 19.5<R_C<21 (which have a median redshift of z=0.35) using a
parametrized mass model for the galaxy mass distribution. This allows us for
the first time to constrain the extent of the halos. We find a robust upper
limit for the truncation parameter s<470 h^{-1} kpc (99.7% confidence). We also
study the biasing properties of these galaxies as a function of scale. We find
that both the bias parameter b and the galaxy-mass cross-correlation
coefficient r vary with scale (on scales 0.1-6 h^{-1} Mpc). Interestingly, we
find that r=0.57^{+0.08}_{-0.07} on scales ~0.5 h^{-1} Mpc.
