  Is the Sun likely to have a more opaque interior than previously thought? The
solar oxygen (or abundance) problem can be solved with higher interior
opacities, reconciling abundance analyses based on 3D convective atmospheres
with the helioseismic structure of the solar interior. This has been known for
more than a decade, but last year we learned that the absorption by just iron
may contribute 7\% more to the solar opacity at the bottom of the convection
zone than predicted by any opacity calculation so far, and by OP05 in
particular. I find that artificial changes to the absorption (calibrated
against the iron experiment) by other elements in a solar mixture give an
opacity increase of a shape and magnitude that can restore agreement between
modern abundance analysis and helioseismology. This suggests that improved
opacity calculations will solve the solar oxygen problem.
