  We present the measurements of strange and multi-strange hadrons in high
energy pp and Pb-Pb collisions at the Large Hadron Collider (LHC) at CERN. The
data for these measurements were collected by the ALICE detector in 2010 and
2011. By comparing strangeness data where Quark-Gluon Plasma (QGP) is not
expected to be produced (pp collisions) with data where the energy-density of
the collision is sufficient to produce the QGP (central and mid-central Pb-Pb
collisions), we are able to investigate the properties of the QGP. We
characterize the matter created in the collision by presenting strange and
multi-strange particle spectra, yields, and transverse momenta in the context
of increasing strangeness number, varying collision energy, and the number of
nucleons participating in the collision (Npart).
