Thumbs Up:  Erasable Highlighters Pilot makes erasable writing tools, including the god-tier of erasable highlighters. They don’t smudge, they don’t bleed through textbook pages, and they’re completely erasable.  Covid-19 Vaccines April 19 is finally here, which means that Covid-19 vaccinations are available for everyone 16 and older in Massachusetts. Pre-register for an appointment at mass.gov…