Quicksand Flooring on Instagram: "3 REASONS why we punch nails: 1. To prevent the sandpaper from ripping - if you go over a protruding nail it will destroy and tear apart your paper and sometimes even damage your machine.. 2. To prevent causing a FIRE - if you hit a nail it could set off a spark, this can then get into your dust bag and one thing we know: a spark and a bag of dust are not friends.. 3. To prevent SHINY HEADS - sometimes the nails only get exposed when sanding a layer of the timbe

NASA Earth on Instagram: "Aerosols are tiny solid or liquid particles in our atmosphere like dust, sulfates from pollution or volcanoes, wildfire smoke, and more. NASA’s GEOS model shows how these particles can affect the air we breathe—even from far away. In this visualization of aerosol data from the GEOS model, different colors represent different aerosols. Sea salt is blue, dust is pink, smoke is orange, and sulfates from pollution and volcanoes are green. Data is shown for Aug. 1 to Sept. 1

Science Teacher's Reaction to a Bizarre Incident