Positive Exposure, founded in 1997 by former fashion photographer Rick Guidotti, challenges the stigma associated with difference by celebrating the beauty and richness of human diversity. Exhibition at UMD thru Oct. 31 Trip to Tanzania, Oct. 19-29 in partnership with Under the Same Sun. Be 1 of 10,000 to sign the petition in support. Al Jazeera video: People with albinism in Tanzania Part I &