"Stochastic resetting" is a rather common process in everyday life. Consider searching for some target such as, for example, a face in a crowd or one's misplaced keys at home.
A natural tendency is, on having searched unsuccessfully for a while, to return to the starting point and recommence the search. In this talk I explore the consequences of such resetting
on perhaps the most simple and common process in nature, namely, the diffusion of a single or a multiparticle system. It turns out that a nonzero rate of resetting has a rather rich and
dramatic effect on the diffusion process, strongly affecting the behaviour of mean first passage times and survival probabilities.