NSF Chemistry & Materials Research OverviewThis web page located on the National Science Foundation's web site will interest everyone in its discussion of "stuff." Despite this endless variety of particular interests and specialized subdisciplines, the sciences of stuff do have a fundamental unity. They are tied together by the common goal of understanding and controlling everything about molecules and materials, from the making and breaking of chemical bonds on timescales of less than a nanosecond, to the aging and corrosion of steel bridge supports on timescales of more than a decade.