You've watched the TV specials. You've seen public service messages with stars like Josh Groban and "Modern Family's" Julie Bowen talking about the fight for a cure.
You've seen the S↑2C coffee mugs, T-shirts, yellow rubber bracelets, and you've seen women sporting Survivor tank tops as they jog past you.
But, what does it all mean? It's the work of Stand Up To Cancer, a nonprofit group co-founded by former "Today" co-host Katie Couric and other well-known figures in Hollywood, to raise money to fund research.
The group's mission is intense and important. They want to accelerate research into treatments and cures for cancer. In a recent promotional spot, the tagline sums it up this way: "1600 People Will Die Today From Cancer. We Can't Act Fast Enough." In it, actors like Benedict Cumberbatch are frantically running through the streets. The video is interspersed with images of cancer survivors, including a young girl and a woman with a missing leg. (See video below.)
You probably know people who've died from cancer. It claims the lives of millions of people worldwide every year. Maybe you know someone who has battled and survived cancer, or maybe that's you.