“It looks like hebel,” LeYanna said as she stepped out of our apartment building on the way to school.  Hebel, is Hebrew. It’s from Ecclesiastes and means “smoke” or “vapor.” We don’t teach her Hebrew but she’s picked some up from watching the Bible Project videos.* It was around 8 a.m. toward the end of October.  The… Read More Machine Monday: Preamble to Air Purifiers