  MINOS searches for neutrino oscillations using the disappearance of muon
neutrinos between two detectors, over a baseline of 735 km. We recently
reported the most precise measurement of neutrino oscillations in the
atmospheric sector and the first tagged measurement of antineutrino
oscillations. The neutrino mass splitting and mixing angle are measured to be
$|\Delta m^{2}| = 2.32_{-0.08}^{+0.12} \times 10^{-3}\,eV^{2}$ and
$\sin^{2}2\theta > 0.90$ (90% C.L.) for an exposure of $7.25 \times 10^{20}$
protons-on-target (PoT). Antineutrino oscillation parameters are measured as
$\Delta
\bar{m}^{2}=(3.36^{+0.46}_{-0.40}\textrm{(stat.)}\pm0.06\textrm{(syst.)})\times
10^{-3}\,eV^{2}$ and
$\sin^{2}(2\bar{\theta})=0.86^{+0.11}_{-0.12}\textrm{(stat.)}\pm0.01\textrm{(syst.)}$
with an exposure of $1.7 \times 10^{20}$ PoT in NuMI antineutrino running mode.
We use the apparent difference in neutrino and antineutrino oscillation
parameters to constrain non-standard matter interactions which could occur
during propagation through the Earth's crust to the far detector.
