atrack significant research funding. that's the part that pete decided to try to change. >> he was ready, sat, told us the vision, and saidan opportunity we've been given to change the world. he said -- these are his words six hours after diagnosis. he said i'm going to get this disease in front of philanthropists like bill gates. >> reporter: he and a friend from new york who also has als had seen occasional fundraising efforts who were throwing ice water at other things for good causes. after passing ideas back and forth, pete staged this massive bucket challenge in downtown boston. >> three, two, one, dump them! >> reporter: and that, so many people at once, so many buckets, is the one that caught a wave in boston and its key idea, make a donation in 24 hours or take the ice water. well, the chain reaction started. >> pardon the pun but it was like a waterfall. >> it was amazing, stupendous, incredible. that was week one. then when it went national i'm saying, my god, this is what it feels like to be in the middle of a viral ice storm. >> reporter: so that's how it all began. what about the impact? here's a man who is