  In supersymmetric theories where the lightest supersymmetric particle is the
gravitino the next to lightest supersymmetric particle (NLSP) is typically a
long lived charged slepton. These NLSPs can be produced by high energy
neutrinos interactions with nucleons in the Earth and be detected by km$^3$
neutrino telescopes. The signal, consists of two parallel charged tracks
separated by a few hundred meters. This is compared to the main background,
coming from direct di-muon production. The distance between the background
tracks is much smaller and allows for a clean separation from the NLSP signal.
We conclude that neutrino telescopes will complement collider searches in the
determination of the supersymmetry breaking scale, and may even provide the
first evidence for supersymmetry at the weak scale.
