It’s the dream of every young American to better the world around them. They work tirelessly to help injured or disabled people, bring education to others in countries where it is not easily accessible, and stand by their convictions. When people are bitter towards the young, calling them naïve, many stand up and not only disagree, but they give proof that they’re worthy of changing the world. So in honor of them, here are 15 American twentysomethings that are well on their way to leaving a lasting impact on current and future generations.