Researchers find the source of an epidemic using relatively little information. Their technique could also help authorities track down contamination in water systems or locate problems in electrical grids.
Phys. Rev. Focus26, 20 (2010) – Published November 12, 2010
Foraging animals or other randomly moving entities can more easily avoid each other by taking more long-distance jumps, according to theoretical results, which may also apply to epidemics and database searches.