Regents approve Å·ÃÀ¿Ú±¬ÊÓƵ Boulder South annexation; E-scooter fleet provides new way to get around; Å·ÃÀ¿Ú±¬ÊÓƵ soccer to host faculty, staff day; Fulfill COVID-19 vaccination requirement for chance to win prizes; Mutation-mapping tool could yield stronger COVID boosters, universal vaccines; more