The important part is that Ray Davis' experiment only detected one type.

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And also, I was wondering if you could talk a little bit about the attempts to get American diplomat Ray Davis freed from Pakistan.

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Nobs, who lured the likes of Miles Davis, Ray Charles and Aretha Franklin to Switzerland, will be honoured at this year's festival, which runs 5 - 20 July, 2013.

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He would do newspaper, radio and TV interviews -- especially with Merriman Smith, Hugh Sidey, Sid Davis, Forrest Boyd, Ray Scherer, Helen Thomas, Marianne Means, Walter Cronkite, Phil Potter, Bob Novak.

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In addition to the inspirational film, the Blu-ray and DVD feature four additional stories of real students and teachers, commentary by Davis Guggenheim and Lesley Chilcott, a conversation with Davis Guggenheim, the making of John Legend's original song "Shine", which was composed specifically for the film, a look at what's changed in education since the movie was filmed and more.

ENGADGET: Waiting for Superman Blu-ray dated February 15th with HD special features & donation credit