MacDonald and Coffield look at the implementation and outcome of enterprise initiatives introduced in Teeside in relation to 100 unemployed young adults in the age-range 16-25, within a political ideology which has sought to change a dependency culture to one of self-reliance. The young people studied are categorized with reference to their attitude to, and experience of, work, and a number of case studies are cited. An important aspect of the study is that it is specifically concerned with ordinary young people. The conclusions are worked out in terms of the changing culture of work,...

The flux, preservation, and accumulation of organic carbon in marine systems are controlled by various mechanisms including primary p- duction of the surface water, supply of terrigenous organic matter from the surrounding continents, biogeochemical processes in the water column and at the seafloor, and sedimentation rate. For the world s oceans, phytoplankton productivity is by far the largest organic carbon 9 source, estimated to be about 30 to 50 Gt (10 tonnes) per year (Berger et al. 1989; Hedges and Keil 1995). By comparison, rivers contribute 1 about 0. 15 to 0. 23 Gt y of particulate...