Surrogate-reared sea otters helped restore threatened population

The population of threatened southern sea otters in Elkhorn Slough, an estuary in Central California, has made a significant comeback as a result of Monterey Bay Aquarium's Sea Otter Program. A newly-published study documents 15 years of research showing how the program helped restore the population in the coastal estuary.

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Rethinking scenario logic for climate policy

Current scenarios used to inform climate policy have a weakness in that they typically focus on reaching specific climate goals in 2100 – an approach which may encourage risky pathways that could have long-term negative effects. A new study presents a novel scenario framework that focuses on capping global warming at a maximum level with either temperature stabilization or reversal thereafter.

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Inequality: What we've learned from the 'Robots of the late Neolithic'

Seven thousand years ago, societies across Eurasia began to show signs of lasting divisions between haves and have-nots. Scientists have now charted the precipitous surge of prehistoric inequality and trace its economic origins back to the adoption of ox-drawn plows.

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Role of Tambora eruption in the 1816 'year without a summer'

A new study has estimated for the first time how the eruption of Mount Tambora changed the probability of the cold and wet European 'year without a summer' of 1816. It found that the observed cold conditions were almost impossible without the eruption, and the wet conditions would have been less likely.

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