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Anti-repeaters – earthquakes that happen in the same location but with opposite focal mechanisms – are widespread but under-recognised and likely result from fluid migration processes, suggests a synthesis of observations of these phenomena from a range of tectonic environments.
Inputs of radionuclides to the marine environment will be impacted by climate change, thus there is a pressing need to understand the existing and potential sources of radionuclides to assess the implications of climate change impacts, suggests a literature synthesis of radionuclide sources.
The complex signals which precede large earthquake mainshocks highlight a juxtaposition of diverse driving mechanisms and the important influence of boundary conditions, according to a synthesis of recent developments in observing seismic and geodetic earthquake precursor signals.
A synthesis of microbiological studies on young volcanic deposits examines the opportunities these habitats represent to study microbial community development in extreme conditions including, potentially, the past environment of Mars.