UN states agree 'historic' deal to protect high seas

UN member states finally agreed Saturday to a text on the first international treaty after years of negotiations to protect the high seas, a fragile and vital treasure that covers nearly half the planet.

Investing smartly in climate change adaptation

Until the world stops or slows our greenhouse gas emissions, we won't know just how severe climate change effects like sea level rise and extreme weather will be. A new framework could help communities when making often irreversible ...

Sea level rise poses particular risk for Asian megacities

Sea level rise this century may disproportionately affect certain Asian megacities as well as western tropical Pacific islands and the western Indian Ocean, according to new research that looks at the effects of natural sea ...

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Climate change

Climate change is any long-term change in the statistics of weather over periods of time that range from decades to millions of years. It can express itself as a change in the mean weather conditions, the probability of extreme conditions, or in any other part of the statistical distribution of weather. Climate change may occur in a specific region, or across the whole Earth.

In recent usage, especially in the context of environmental policy, climate change usually refers to changes in modern climate (see global warming). For information on temperature measurements over various periods, and the data sources available, see temperature record. For attribution of climate change over the past century, see attribution of recent climate change.

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