Linked from
The 14 pages that link to Circular dichroism, each with the reason it gives.
ChiralityRelated: Chiral molecules can absorb the two circular polarizations differently.
EnantiomerRelated: Its signal can distinguish enantiomers and help determine molecular structure.
PolarizationRelated: It connects polarization to molecular structure and optical activity.
Optical isomerismRelated: It is a related chiroptical effect used to study molecular structure.