Resumen de Brief points.

• This article provides brief facts on science-related topics. After the success of the privately developed SpaceShipOne, the X Prize Foundation and the World Technology Network announced plans for prizes to spur innovation by private firms to solve social problems. A detector 1,000 times more sensitive to motion than existing sensors relies on two gratings that deform when one moves over the other by as little as 10 nanometers. Some scientists and consumer advocates have called for a reevaulation of studies that led to lower cholesterol guidelines. The technological promise of carbon 60 molecules, or buckyballs, has been tempered because they can kill cells.