The homochirality of life is still an unsolved mystery. Magneto-chiral dichroism (MChD, the dependence of the absorbance of a chiral molecule on the direction of a magnetic field) has attracted attention as a plausible way to explain this puzzle. Several examples of MChD of metal compounds are known, but MChD of biological organic compounds has not been reported. In their Communication on page 9133 ff., K. Ishii et al. describe the first observation of MChD in organic compounds by using porphyrin J-aggregates.