In a small factory in the northeastern India, a strange type of swill churns in a vat. Bits of chopped-up old hosiery swirl around in almost 200 gallons of water while, at six-second intervals, 72-year-old Mahesh Bora adds fists full of rhino dung.
Yes, you read that right.
Bora is making paper. The rhino dung adds fiber to the paper, and Bora says the whole enterprise will help save the endangered Asian one-horned rhinoceros.