Energy & Green Tech

How to have an all-renewable electric grid

The main solution to climate change is well known—stop burning fossil fuels. How to do this is more complicated, but as a scholar who does energy modeling, I and others see the outlines of a post-fossil-fuel future: We ...

Energy & Green Tech

Leaner, cleaner diesel engines

Diesel engines are widely used in transport the world over. Regulatory and legal efforts are afoot to reduce their use in some countries because of concerns about pollution. However, they are likely to remain a mainstay of ...

Energy & Green Tech

Using geothermal to cool your home

Geothermal energy can be used to sustainably keep a house cool in notoriously hot parts of the world, thanks to the design of a new cooling system by researchers in Italy and Turkey. Writing in the International Journal of ...

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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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