  The vast bulk of visible mass emerges from nonperturbative dynamics within
quantum chromodynamics (QCD) -- the strong interaction sector of the Standard
Model. The past decade has revealed the three pillars that support this
emergent hadron mass (EHM); namely, a nonzero gluon mass-scale, a
process-independent effective charge, and dressed-quarks with constituent-like
masses. Theory is now working to expose their manifold and diverse expressions
in hadron observables and highlighting the types of measurements that can be
made in order to validate the paradigm. In sketching some of these
developments, this discussion stresses the role of EHM in forming nucleon
electroweak structure and the wave functions of excited baryons through the
generation of dynamical diquark correlations; producing and constraining the
dilation of the leading-twist pion distribution amplitude; shaping pion and
nucleon parton distribution functions -- valence, glue and sea, including the
antisymmetry of antimatter; and moulding pion and proton charge and mass
distributions.
