Internet

Cellular networks vulnerable to wildfires across U.S.

About one in four people in the United States lives in an area served by cellular phone towers at risk of an outage caused by wildfires, according to researchers at the University of Wisconsin–Madison.

Energy & Green Tech

California is ready to pull the plug on gas vehicles

California will ban the sale of new gasoline-powered passenger cars and trucks in 15 years, Gov. Gavin Newsom announced Wednesday, establishing a timeline in the nation's most populous state that could force U.S. automakers ...

Engineering

The future of cities in the face of twin crises

Before January this year, many people around the world had never heard of Wuhan. Today, this Chinese megacity—population 11 million—has achieved notoriety as the birthplace of a pandemic.

Energy & Green Tech

World fritters away half trillion dollars on coal support

Nations around the world risk wasting $640 billion by continuing to prop up the coal industry rather than investing in less expensive and environmentally friendlier wind and solar power initiatives.

Energy & Green Tech

Offshore wind farms could power much of coastal China: study

Under the Paris Climate Agreement, China committed to rely on renewable resources for 20 percent of its energy needs by 2030. Currently, the country is on track to double that commitment, aiming to hit 40 percent by the next ...

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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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