Richard Boyle

TL;DR: In this paper, the authors argue that the evolution of increasingly complex eukaryotes, including the first animals, could have oxygenated the ocean without requiring an increase in atmospheric oxygen.

TL;DR: High-precision uranium isotopic data in marine carbonates deposited during the Late Cambrian 'SPICE' event is reported, documenting a well-defined -0.18‰ negative δ238U excursion that occurs at the onset of the SPICE event's positive δ13C and δ34S excursions, but peaks (and tails off) before them.

TL;DR: In this article, the authors explore the biogeochemical implications of a bioturbation-induced organic phosphorus sink in a simple model and show that increased bioteurbation robustly triggers a net decrease in the size of the global oxygen reservoir, the magnitude of which is contingent upon the prescribed difference in carbon to phosphorus ratios between bioturbed and laminated sediments.

TL;DR: In this paper, the authors show that the long gaps between snowball glaciations can be explained by limitations on silicate weathering rates controlled by the availability of fresh rock, and that when this transport-determined limitation is incorporated into the COPSE biogeochemical model, the stabilization time is substantially longer, >107 years.

TL;DR: Building Effective Evaluation Capacity as discussed by the authors draws upon three decades of experience and observation to derive prescriptive lessons from the experience of a range of countries and governments rather than being country-specific.