  The strong interaction among hadrons has been measured in the past by
scattering experiments. But while this technique was extremely successful in
providing information about the nucleon-nucleon and pion-nucleon interactions,
when unstable hadrons are considered the experiments become more challenging.
In the last few years the analysis of correlations in the momentum space for
pairs of stable and unstable hadrons measured in pp and p-Pb collisions by
ALICE at the LHC provided a new method to investigate the strong interaction
among hadrons. In this article we provide a review of the numerous results
recently achieved for hyperon-nucleon, hyperon-hyperon and kaon-nucleon pairs
showing that the new method opens the possibility of measuring the residual
strong interaction of any hadron pair.
