Here are the most popular Worcester Sun articles Dec. 17-23:
Ray Mariano
Mass. schools absorb 2,000-plus students from Puerto Rico
UMass docs tackle key problem in liver transplant process
Cannabiz: Potential billion-dollar industry had its pot stirred in Worcester
Canal District medical marijuana shop to follow a Coloradan path
Holy Cross Prof. Avery-Peck: Hanukkah’s true meaning is about Jewish survival