Hurricane Harvey has been a force that has devastated the state of Texas, in particular, the city of Houston, leaving hundreds of thousands stranded after massive flood waters rose more than 15 feet high. Comedian Kevin Hart began the Hurricane Harvey challenge as an effort to raise money for the devastating storm and it caught on quickly. Many celebrities excepted Kevin Hart's challenge, including Chris Brown, DJ Khaled, The Rock and much more. So far, the challenge has raised over $800,000. Stay tuned for more updates on the rescue efforts in Houston.