Teams around the world are building ever more sophisticated artificial intelligence systems of a type called neural networks, designed in some ways to mimic the wiring of the brain, for carrying out tasks such as computer vision and natural language processing.

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The livelihoods of millions of people living along the world’s biggest river systems are under threat by a range of stressors caused by the daily economic, societal and political activity of humans – in addition to the long-term effects of climate change, researchers report.

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Many countries are failing to comply with the non-binding commitments of the Paris Agreement, making it increasingly clear that we have to reconsider how to ensure collective action to limit global warming to less than 2°C above preindustrial levels. 

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