I would step in front of a bus for my kids, as would most moms. I make sure they have sweaters when it’s cold, and water when it’s warm. I worry when they don’t get enough sleep, and go on red alert when they cough or sniffle. I also feed them primarily organic meals, try to reduce their BPA exposure by using more reusable water bottles and less canned foods, avoid food dyes and other artificial ingredients, pack their beach bags with zinc-based sunscreen, refuse triclosan or other pesticides, and clean my home with vinegar so they don’t have to inhale synthetic fragrances. I think that all of these things make…