It was sunny today, but I felt miserable because I had three math classes in a row. I’m still confused about those algebraic operations involving negative numbers. Math isn’t my forte. Anyway, I also studied an article about genetically modified crops. My great-grandma always complains about them. She forbids us from eating a lot of things and considers GM foods to be poisonous. Well, scientifically, there isn’t any evidence to support her belief. And I think it’s inevitable to eat GM foods, because most items on the shelves are GM products. How can you tell them apart?