You might think you can just leave the science stuff to scientists—but you can't. We live in a world that is surrounded by science and we use toys that depend on science (like that fancy smartphone in your hand). Other issues, like climate change and vaccinations, can have a significant impact on any one of us. You don't have to be science nerd, but you have to at least know the important parts of science. Here are the key aspects of science that everyone needs to know. Yes, this is for you.