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  1. U.S. Environmental Protection Agency | US EPA

    May 27, 2026 · Website of the U.S. Environmental Protection Agency (EPA). EPA's mission is to protect human health and the environment.

  2. ENVIRONMENTAL Definition & Meaning - Merriam-Webster

    The meaning of ENVIRONMENTAL is of, relating to, or produced by environment. How to use environmental in a sentence.

  3. Environmental Topics | US EPA

    Apr 27, 2026 · EPA's resources on environmental issues include research, basics, what you can do, and an index covering more specific terms.

  4. Environmental Working Group – AVOID TOXIC PESTICIDES | Environmental

    Feb 26, 2025 · We built our consumer guides to help you learn about the hidden health dangers in your food, water and everyday products to make better decisions. Across the U.S, we found dozens of …

  5. What Are Environmental Problems Facing Our World Today

    Mar 14, 2026 · Environmental problems are harmful changes to the natural world caused primarily by human activity. They include air and water pollution, climate change, deforestation, biodiversity loss, …

  6. United States Environmental Protection Agency - Wikipedia

    The Environmental Protection Agency (EPA) is an independent agency of the United States government tasked with environmental protection matters. [2] President Richard Nixon proposed the …

  7. Environment | Conservation, Ecology & Sustainability | Britannica

    Jun 3, 2026 · environment, the complex of physical, chemical, and biotic factors that act upon an organism or an ecological community and ultimately determine its form and survival. The Earth’s …

  8. Environment - Wikipedia

    Environment (systems), the surroundings of a physical system that may interact with the system by exchanging mass, energy, or other properties. Built environment, constructed surroundings that …

  9. Understanding the Environment: Definitions and Core Principles

    Oct 5, 2025 · At its core, the environment is the combination of all physical, chemical, and biological factors acting upon an organism or ecological community. It includes everything that surrounds and …

  10. Environmental Protection Agency (EPA) | USAGov

    The Environmental Protection Agency (EPA) protects people and the environment from significant health risks, sponsors and conducts research, and develops and enforces environmental regulations.