Ramen. In the US, it’s -the- staple of many college kids’ diets and a popular option for those trying to save money on their grocery bills. In Japan, it’s the equivalent of grandma’s chicken soup, and every bit as welcome and soothing. As it turns out, it might also be what scientists need to save the world. Though not the noodles themselves, ramen making might just be one of the best ways to clean...