Hey, how are you? I would like to know your advice on something which I cannot decide no matter how hard I think about it. Im 19 years old and Im in my first university year in Physics. I live in Argentina, where there is no division between college and school. You choose a career and you get the m.s after 6 years in the same place you started. I still cant decide even if Im on my first year as they are almost the same classes between the two the first years. I want to choose something that might have an impact on the world. Help the world become better and more advanced. I like Physics because I am the kind of person which questions everything, not only about Physics but about everything about life. Also, I would like to, in the future, being useful to humanities technological and scientifical development. And physics seems like a good choice as it basically covers every aspect of the Universe. But, I am also really concerned on the practical aspect of it. I want to help our world become a better place. Help Develop to become a better civilization. Physics might not be the best choice as it is soo abstract I don't think its applications, modern physics, would help much. I was planning on doing a double major between physics and computer science. And then maybe do applied physics or mechanical engineering. (Really choosing a life path so early is hard!) Engineering was always my second choice, but right now I am leaning towards it. As I find It will give me better tools and more freedom to accomplish my goals. Also it would be less theorethical with more applications. I was thinking Mechanical Engineering maybe. Lets say, for example, I want to work in Nasa. What would an engineering degree allow me to do? And what would a Physics degree differentiate in? Thanks guys!