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Phylogenetic data infer temporal clustering of immigration and re-diversification of Australian lizards and snakes, suggesting that climatic and geological changes may have precipitated re-assemblies of this vertebrate group.
Modelled patterns of climate change impacts on sub-Saharan agriculture provide a detailed picture of the space- and timescales of change. They reveal hotspots where crop cultivation may disappear entirely, but also large areas where current or substitute crops will remain viable through this century.