Alexander J. Wright, Princeton University.
Solar neutrino experiments have taught us a great deal about neutrinos, neutrino oscillations, and the nuclear fusion reactions that power the sun. The Borexino experiment has made important new solar neutrino measurements by extending neutrino spectroscopy to very low energies. In this talk I will review what we have learned (and are still learning!) about solar neutrinos and the Sun. I will also describe our measurement of the flux of terrestrially produced 'geo-neutrinos' and how this and similar measurements can allow us to study the chemical composition of the Earth's interior, and to better understand our planet's thermal history.
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