IceCube, a telescope under construction at the South Pole, will peer through the earth to open a new window onto the universe. Like its predecessor, AMANDA, IceCube will search for neutrinos from the most violent astrophysical sources: events like exploding stars, gamma ray bursts, and cataclysmic phenomena involving black holes and neutrino stars. The IceCube telescope is a powerful tool to search for dark matter, and could reveal the new physical processes accosciated with the enigmatic origin of the highest energy particles in nature.