  The role played by subthreshold meson-baryon dynamics is demonstrated in
kaonic-atom, Kbar-nuclear and eta-nuclear bound-state calculations within
in-medium models of Kbar-N and eta-N interactions. New analyses of kaonic atom
data reveal appreciable multi-nucleon contributions. Calculations of
eta-nuclear bound states show, in particular, that the eta-N scattering length
is not a useful indicator of whether or not eta mesons bind in nuclei nor of
the widths anticipated for such states.
