Summit on the Summit is climbing Mt. Kilimangaro (19,340 ft) to fight the global clean water crisis. With a team of activists and celebrities which include the likes of Santi, Kenna, and Emile Hirsch on board they are bravely trekking upward to raise awareness. Not to be outdone, the website offers a multitude of beautifully designed interactivity that allows you to not only follow them up the climb via pics, videos and tweets, but also allows you to follow each climbers vital signs.
See for yourself here.