Folding@Home: The Protein Folding Program

Proteins are long-chained molecules that fold in certain ways, giving them shape.  Problems with these shapes are the subject in Alzheimer's, ALS, Huntington's disease, Parkinson's disease, and cancer research. You can help scientists who are studying these diseases by simply running a piece of software on your computer.  Run out of Stanford University, Folding@home is a distributed computing project -- people from throughout the world download and run software to band together to make one of the largest supercomputers in the world. Every computer takes the project closer to the research goals.

Photo credit: Folding@home website.