Pay for my College Tuition

Hello, my name is Lili, I am a 23 year old full time student, living off campus, working full time at a local restaurant to pay bills. I am entering my senior year of college at the University of Memphis and due to new policies of the Federal Student Aid, I am not allowed to be awarded any more financial aid. I am a straight A student, on the Dean's List, majoring in Earth Science with a concentration in Geography. But there is only 1 scholarship offered to Junior/Senior Earch Science students and it does not provide enough aid. Please can anyone help me pay for this semester? My dream is to work for National Geographic, or a conservation organization such as NOAA aiding and defending wildlife, protecting it from pollution, educating youth about waste management. I am not able to pay this out of pocket amount of $2000 to keep myself registered.  Classes begin August 22, 2016. I am so afraid that I will not be able to attend these important classes if I cannot pay this amount by August 19. I want to stay in school - I am getting so close to graduating and recieving the appropriate degree I need in order to apply for the career of my dreams. Please help me accomplish this.