More than 11,000 scientists around the world are backing a study with a dire warning: Earth is facing a climate emergency.
In addition, nations need to sharply reduce emissions of potent pollutants such as methane, soot and hydrofluorocarbons, which are human-made compounds that are commonly used in air conditioning, refrigeration and aerosols, the study finds. The researchers say that reducing these short-lived pollutants could slow the planet’s short-term warming trend by more than 50 percent over the next few decades.
The study is based on 40 years of data that show how human activities have affected the planet, including changes in fossil fuel consumption, carbon dioxide emissions, rates of deforestation and global surface temperatures. The authors warn that climate change is intensifying faster than most scientists predicted and is “threatening natural ecosystems and the fate of humanity.”
The report’s signatories include scientists from 153 countries, known together as the Alliance of World Scientists. The study does highlight some progress that has been made, such as a 373 percent increase in solar and wind energy consumption per decade since 2000. But the authors point out that in 2018, solar and wind energy use was still 28 times smaller than fossil fuel consumption.
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