Several explanations for the 200 to 280 ppm glacial/interglacial change in atmospheric CO
2 concentrations deal with variations in southern ocean phytoplankton productivity and the …

An interesting oceanographic problem concerns the excess major plant nutrients (PO 4 , NO
3 , SiO 3 ) occurring in offshore surface waters of the Antarctic 1–3 and north-east Pacific …

Particulate organic carbon fluxes were measured with free-floating particle traps at nine
locations during VERTEX and related studies. Examination of these data indicated that there …

This paper first reviews trends since 1985 in public spending on labour market programmes,
both active and passive. It then reviews the main findings from recent evaluations of labour …

… of the social sciences, John Levi Martin exposes the root of the problem … Martin, instead of
assuming that there is something … and ambitious book, John Levi Martin argues that the most …

This book is an introduction to the theory of computation. After a chapter presenting the
mathematical tools that will be used, the book examines models of computation and the …

DNA sequence information underpins genetic research, enabling discoveries of important
biological or medical benefit. Sequencing projects have traditionally used long (400–800 …

… In this paper, John Martin et al. confront this problem for aerospace-grade aluminium alloys
that could not previously be 3D-printed. They decorate the metal powder feedstock with grain…

Using in vitro gene amplification by the polymerase chain reaction (PCR) and mutation
detection by the RNAase A mismatch cleavage method, we have examined cK-ras genes in …

The idea that iron might limit phytoplankton growth in large regions of the ocean has been
tested by enriching an area of 64 km 2 in the open equatorial Pacific Ocean with iron. This …