Climate Change Science

  • Extreme Heat

    Extreme heat is dangerous. Climate change is fueling more heat waves and extreme temperatures. Learn more about extreme heat impacts.

  • Ocean Acidification

    As oceans absorb more carbon dioxide, they become more acidic. This can harm marine ecosystems and the people and economies that rely on them. 

  • Talk About Climate Change

    Learning about climate change science and sharing your knowledge with others helps raise awareness about climate change causes, impacts, and solutions. See how you can spread the word.  

  • Wide-Ranging Impacts

    Climate change has significant impacts on the natural environment, people, and infrastructure. 

The earth’s climate is changing. Multiple lines of evidence show changes in our weather, oceans, ecosystems, and more. EPA is committed to providing the most up-to-date and accurate climate-science information, including basics, causes, indicators, and impacts of climate change.


 

  • Basics

    Photo: The sun in a hazy sky over a city.

    Learn about some of the key, foundational concepts related to climate change.

    Learn the basics

  • Causes

    Emissions coming out of several industrial facility smokestacks

    Get to know the main drivers of climate change and how they contribute to a warming climate.

    See the causes

EPA Resources About Climate Change

 
Contact Us About Climate Change Science to ask a question, provide feedback, or report a problem.
Last updated on October 23, 2026