03/18/2010 05:12 am ET Updated May 25, 2011

Jessica Biel, Emile Hirsch Celebrity Kilimanjaro Climb: Track Their Heart Rates, See Videos On Interactive Web Site

Jessica Biel, Emile Hirsch, and a crew of celebs and activists are climbing Mt. Kilimanjaro to raise awareness of the water crisis. An interactive website lets you follow them.. very closely.

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