(1) What dust properties and dust physics can be probed from dust polarization?

(2) How to measure 3D magnetic fields using polarization techniques?

(3) What are the roles of magnetic fields and dust in star formation and stellar feedback?

(4) What dust polarization can tell us about exoplanet formation, exoplanetary systems, and atmospheres?

(5) What are the roles of dust polarization in time-domain astrophysics?

(6) Dust polarization and complementary techniques: synchrotron, Faraday, Zeeman, atomic alignment, and gradient techniques?

(7) How to achieve an accurate model of foreground dust polarization for the CMB B-mode quest?