  In this sketch, some recent developments in Compton scattering off the
deuteron are reviewed. The strong energy-dependence of the scalar magnetic
dipole polarisability \beta_M1 turns out to be crucial to understand the data
from Saskatoon at 94 MeV. Chiral Effective Field Theory is used to extract the
static iso-scalar dipole polarisabilities as
\bar{\alpha}^s=12.6\pm1.4_{stat}\pm1.0_{wavefu} and
\bar{\beta}^s=2.3\pm1.7_{stat}\pm0.8_{wavefu}, in units of 10^{-4} fm^3.
Therefore, proton and neutron polarisabilities are identical within error bars.
For details and a better list of references, consult the given references.
