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Reports on the reduced North Atlantic Deep Water flux to the glacial Southern Ocean. How the global circulation of the oceans and the atmosphere transports heat around the Earth; Data for past circulation taken from sediment cores in the South Atlantic Ocean that has yielded conflicting interpretations of ocean circulation in glacial times; Neodymium isotope ratios from the dispersed Fe-Mn oxide component of two southeast Atlantic sediment cores; Increase in biological productivity.

This article discusses a study which examined sulphur isotopes in rocks from the ridge beneath the Atlantic Ocean. Conducted by J. Labidi et al., the study used an analytic technique to recover sulphur from rock samples and analyzed fingerprints of the isotopes. Results suggested that a substantial fraction of sulphur at the surface of the Earth is left over from the formation of its core.