  Once heavy-quark corrections are take into account neutrino-proton elastic
scattering provides a complementary probe of polarized strangeness in the
nucleon to measurements from inclusive and semi-inclusive polarized deep
inelastic scattering. We review the different types of experiment and a recent
NLO calculation of heavy-quark contributions to the weak neutral-current
axial-charge (measureable in neutrino-proton elastic scattering) performed
using Witten's heavy-quark renormalization group method.
