U2 will give fans a chance to download a new track called "Invisible" on ITunes for (RED) in the fight against Aids. Starting during the Big Game on Sunday February 2nd and for 24 hours,  every time the track is downloaded, anywhere in the world, a $1 donation will be made to (RED) by Bank of America - up to a total of $2m. All the funds will go to the Global Fund to Fight AIDS, Tuberculosis and Malaria. Click the video for more details or visit U2's website.