This is the interpretation of Quantum Mechanics that comes closest to a consensus between physicists, although probably falls short of this.

The basic idea of Many Histories is that of all the possible ways to get from an earlier state of the universe to the current one, that the universe went through all possible histories that are consistent with the current state.

It is logically extremely close to the Many Worlds Interpretation; although is distinguishable as it does not make claims for the existence of universes that have split off from our universe and do not interact with our universe any longer.