Declining African American Enrollment in STEM

This AP article entitled "Declining Numbers of Blacks Seen in Math, Science" discusses the fact that fewer African American men and women are enrolling and completing degrees in the STEM disciplines (Science, Technology, Engineering and Math). The article discusses barriers, including self-defeating beliefs, lack of role models and mentors, pressure to earn money quickly, and discouraging academic environments. What are some of the ways to overcome these barriers? How can colleges facilitate higher enrollment and success of African American students in STEM courses?