Chirality of fermions is linked to the topology of gauge fields due to the quantum chiral anomaly.
While the chiral anomaly is usually associated with the short-distance behavior, recently it has been realized that
it affects also the macroscopic behavior of fluids with chiral fermions. In particular, the local imbalance between
left- and right-handed fermions in the presence of magnetic field induces the non-dissipative transport of
electric charge ("the Chiral Magnetic Effect"). In heavy ion collisions, there is an evidence for the effect
from the experiments at Relativistic Heavy Ion Collider and the Large Hadron Collider. Very recently,
the Chiral Magnetic Effect has been discovered in ZrTe5 and other materials possessing chiral quasi-particles.