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.
Scientists at Scripps Institution of Oceanography at the University of California San Diego reported today that carbon dioxide levels at Mauna Loa Observatory reached 432.00 parts per million (ppm) in May, continuing a long ...
Environment
Jun 11, 2026
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Carbon dioxide removal experts have sounded the alarm in Milan this week over a shortfall in research and investment in the nascent sector viewed as essential for mitigating climate change.
Environment
Jun 11, 2026
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In a new paper published in Science, leading scientists and climate policy experts show that 15% of current global warming (0.3°C) from human emissions stems from pollutants that fall outside most existing climate policy ...
Earth Sciences
Jun 11, 2026
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Heat waves across Europe and South Asia have dominated the news recently. But these events are really a surface expression of more fundamental changes affecting our planet: Earth itself is accumulating heat faster than ever ...
Planetary Sciences
Jun 11, 2026
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Strong and consistent evidence shows that the entire climate system is continuing to heat, driving rapid global warming. Human activities pushed global warming to 1.37°C in 2025, and its level is projected to surpass 1.5°C ...
Earth Sciences
Jun 10, 2026
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The Fifth National Climate Assessment was released this morning, with dire messaging around the need for the immediate reduction of greenhouse gas emissions—but also hope, with advances in technology and increased adoption ...
Environment
Jun 9, 2026
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Every internet search, streamed video and AI-generated response depends on a data center somewhere. Driven by rapid growth in artificial intelligence, cloud computing and cryptocurrency, data centers have become the backbone ...
Environment
Jun 8, 2026
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A new study led by Professor Mark Trimmer of Queen Mary University of London, published in the journal Nature Climate Change, explains how increases in natural methane emissions will be maximized under future climate warming.
Earth Sciences
Jun 5, 2026
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Current estimates of hydrogen's climate impact are now sufficiently robust to inform policy and business decision-making, according to researchers in a new review article on the climate impacts of hydrogen emissions.
Environment
Jun 4, 2026
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Waterlogged land areas such as marshes, bogs and fens are the world's largest natural source of methane. Even the smallest of wetlands emit this powerful greenhouse gas. In a study from The University of Texas at Austin, ...
Environment
Jun 4, 2026
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