Energy & Green Tech

X-rays light the way to more stable solar cell materials

Using the bright X-rays of the Advanced Photon Source and a custom-built characterization platform, scientists have traced the ion movements inside perovskites, a potential material for new solar energy harvesting devices.

Energy & Green Tech

Electric aircraft could lead to major climate benefits, says study

Aviation has grown considerably in recent decades and accounts for approximately 2% of global carbon dioxide emissions and some 4% of all climate change impacts annually. While aviation is an important contributor to climate ...

Energy & Green Tech

Trade barriers can slow energy transition: IEA chief

Trade barriers can slow the world's energy transition but commerce also needs to be fair, International Energy Agency chief Fatih Birol said Wednesday, as world powers tussle over the technologies key to fighting climate ...

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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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