Neutrino Astrophysics in the cold: Amanda, Baikal and IceCube

This talk review status and results from the two presently operating underwater/ice neutrino telescopes, NT-200 in Lake Baikal and Amanda-II at the South Pole. It also gives a description of the design and the expected performance of Icecube, the next-generation neutrino telescope at South Pole.Comment: Talk given at the Nobel Symposium on Neutrino Physics, Haga Slott, Sweden, 2004, 14 pages, 10 figure