  The Kamioka Liquid scintillator Anti-Neutrino Detector (KamLAND) is
collecting antineutrino events generated by nuclear reactors and by Thorium and
Uranium decay in the Earth interior. We comment on a systematic approach to the
evaluation of the geo-neutrino contribution and of its uncertainties in
KamLAND, taking into account geophysical and geochemical indications,
estimates, and data. The results can help to improve both the neutrino
oscillation analysis and the knowledge of the Earth interior. Input and
desiderata for future geoneutrino analyses are identified.
