The document discusses World Community Grid (WCG), a nonprofit computing grid that harnesses the collective power of volunteers' devices to process scientific research projects. It details several active and completed projects supported by WCG related to healthcare issues like AIDS, cancer and childhood diseases. The document also provides statistics on WCG's network size and contributions to date. It encourages readers to join WCG by downloading their client application to contribute their device's idle computing power to important scientific research.