?????????????????? ?????????????????? ???????????????????? ?????????????? ???? ??????????????, ?????? ?????????? ?????????????? ?????????????????????? ???????????????? ?????????????????????? ???????????????? ????????????????, ???? ??????????????????????????, ?????? ???????????????????????? ?????????????????? x??(t) ~ t?? , ???? ?????1 . ?????????????????? ???????????????? ?????????? ???????????????????????? ?????????? ????????????????, ???????????????? ?????????????????????????? ???? ???????????????? ?????????????? ?? ?????????????????????? ???????????????????? ???????????????????? ??????????????????. ?????????????????????????? ???????????? ??????????????????, ?? ???????? ?????????? ?????????????? ???????????????????? ???????????????? ?? ???????????????????????? ???????????????????? ????????, ???????????????????? ???????????? ?????????????????? ???????????????? ???? ?????????????? ???????????????? ?? ???????????????? ?? ?????????????????? ????????????????????????????.

Strange diffusion is de???ned as a process in which the mean square displacement of a randomly walking test particle behaves asymptotically as x??(t) ~ t?? , with ?? ??? 1 . A brief review of the properties of such processes is presented, stressing their deep difference from the corresponding normal diffusive evolution. A number of examples are discussed, including diffusion of charged particles in a ???uctuating magnetic ???eld, continuous time random walks and transport in chaotic Hamiltonian systems.