alright well i'm not going to get into a discussion about actually paying 50k for a college, if you wanted that opinion you would have asked. As for student loans in the amount you may need there are a few options.
One is a parent PLUS loan. This has an interest rate of 8.5% and is taken out by your parents. There are also private student loans with variable interest rates based upon the prime rate (currently 8.25%). You will need a cosigner and if your parents have good credit, prime + 0% is possible. The payment on private student loans as well as PLUS loans can be deferred until after graduation, although the PLUS loan may require interest payments while in school. Most big bank institutions offer private/Parent loans.
There are stafford loans at 6.8% that are federally guaranteed with loan limits of $3500 freshmen year, $4500 sophomore year, and $5500 after that. If you demonstrate federal need you can get subsidized stafford loans in which the government pays the interest while you are in school. These loans are in your name only but you will need to fill out the fafsa to be given them.
Another option for your parents to consider is taking out a home equity line of credit to pay for your college costs. The interest on those is usually below prime.
Go here for more info:
http://www.finaid.org/loans/