It's Halloween time! 🎃
Download a scary stencil to add some Cornelliana to your pumpkin patch.
Get carving“Air purifiers appear to work—sometimes strikingly well. After a gas-leak scare near Los Angeles, the city school district installed air filters in classrooms, and students’ math and English scores shot up, the magnitude roughly on a par with cutting class sizes by a third.”
Weill Cornell physician says air purifiers appear to work to reduce indoor pollution from wildfires Source: New Yorker | The Hazy Days of Summer QUOTE