Can a classroom fan double as an air purifier? Two Delhi teens put it to test | Delhi News
Krish Aggarwal, a Class XII student at Sanskriti School, and Samarth Meattle, a Class XI student at Vasant Valley School, NEW DELHI: Switch on the fan and the white fabric swells like a balloon. Leave it in use for a few weeks and it can turn grey, sometimes black. For two Delhi teenagers, that change…
