Why Pillows Turn Yellow, and How to Clean Them
by Elizabeth Yuko from Lifehacker on (#5YFSK)

Although we know that human bodies-including our own-can be gross at times, we'd prefer not to be reminded of it. So when you're changing your sheets and see that your once-perfectly-white pillows are now covered in a web of yellow and brown-ish stains, it can be unsettling.