Greenhouse gases are atmospheric constituents that absorb and emit infrared radiation, thereby contributing to the greenhouse effect and Earth’s radiative energy balance. Major greenhouse gases include carbon dioxide (CO₂), methane (CH₄), nitrous oxide (N₂O), ozone (O₃), and various halogenated compounds, along with water vapour (H₂O) as a feedback agent. Their radiative forcing depends on concentration, spectral absorption properties, atmospheric lifetime, and overlap with other absorbers. In climate research, greenhouse gases are quantified via metrics such as global warming potential and effective radiative forcing to assess their contribution to anthropogenic climate change and to inform emissions mitigation strategies.
The Trump administration on Thursday revoked a scientific finding that long has been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change, the most aggressive move by the president ...
Environment
Feb 12, 2026
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President Donald Trump is poised Thursday to revoke a landmark scientific finding that greenhouse gases endanger public health by driving climate change—a determination that underpins US regulations aimed at curbing planet-warming ...
Environment
Feb 12, 2026
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China's emissions of planet-warming carbon dioxide were "flat or falling" in 2025, analysis showed Thursday, but progress remains fragile and it is not yet clear that emissions have peaked.
Environment
Feb 12, 2026
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The Earth is warming more rapidly than before, and extreme weather events are becoming more frequent and more intense. While global warming is mainly driven by carbon dioxide emissions, it is also influenced by air pollution. ...
Environment
Feb 12, 2026
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Current global climate models (GCMs) support with high confidence the view that rising greenhouse gases and other anthropogenic forcings account for nearly all observed global surface warming—slightly above 1 °C—since the ...
Scientists say that multiple Earth system components appear closer to destabilization than previously believed, putting the planet in increased danger of following a "hothouse" path driven by feedback loops that can amplify ...
Earth Sciences
Feb 11, 2026
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The Trump administration on Thursday will revoke a scientific finding that long has been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change, the White House announced.
Environment
Feb 11, 2026
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President Donald Trump's administration is expected to finalize this week its repeal of a foundational scientific determination that underpins the US government's authority to regulate greenhouse gas pollution.
Environment
Feb 10, 2026
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China's sweeping efforts to clean up its air have delivered one of the biggest public health success stories of recent decades. Since the Air Pollution Prevention and Control Action Plan was launched in 2013, coal-fired power ...
Methane is a powerful greenhouse gas with strong heat-trapping capabilities. Although there is less methane in the atmosphere than carbon dioxide, the foremost greenhouse gas, researchers attribute 30% of modern global warming ...
Earth Sciences
Feb 9, 2026
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