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  1. Greenhouse gas - Wikipedia

    Greenhouse gases trap some of the heat that results when sunlight heats the Earth's surface. Three important greenhouse gases are shown symbolically in this image: carbon dioxide, …

  2. NJDEP| Greenhouse Gas | NJ GHG Inventory

    May 7, 2025 · New Jersey’s statewide greenhouse gas (GHG) emissions inventory is a critical tool for tracking progress in reducing GHG emissions.

  3. Greenhouse Gas (GHG) Emissions and Removals | US EPA

    Nov 12, 2025 · Learn about the most important GHGs. Where do GHGs come from? Learn about the human activities that add GHGs to our atmosphere. Find out more about global …

  4. What Are Greenhouse Gases and Why Do They Matter

    Oct 12, 2022 · Greenhouse gases (GHGs) are a category of gases that absorb heat energy emitted from the planet's surface and they remain in Earth's atmosphere for a long time (from …

  5. Homepage | GHG Protocol

    Greenhouse Gas Protocol provides standards and tools that help countries and cities track progress toward climate goals. In 2023, 97% of disclosing S&P 500 companies reported to …

  6. Definition, Emissions, & Greenhouse Effect - Britannica

    Nov 7, 2025 · greenhouse gas, any gas that has the property of absorbing infrared radiation (net heat energy) emitted from Earth’s surface and reradiating it back to Earth’s surface, thus …

  7. Greenhouse Gases Factsheet - Center for Sustainable Systems

    Greenhouse gases (GHGs) in the atmosphere prevent some of this heat from escaping into space, instead reflecting the energy back to further warm the surface. 1 The greenhouse effect …

  8. Welcome — U.S. Greenhouse Gas Center

    This multi-agency effort consolidates greenhouse gas information from observations and models to create a unified source for U.S. government and other datasets. The goal of the US GHG …

  9. Greenhouse gases - World Meteorological Organization

    Nov 6, 2025 · Greenhouse gases (GHGs) in the atmosphere trap infrared radiation from the Earth, keeping it warm, this is known as the greenhouse effect. GHG emissions from human activities …

  10. Greenhouse Gases - MIT Climate Portal

    Greenhouse gases are gases—like carbon dioxide (CO 2), methane, and nitrous oxide—that keep the Earth warmer than it would be without them. The reason they warm the Earth has to do …