Climate Change Science
Learn About Heavy Rains
Intense rainfall can flood streets, overwhelm sewer systems, and even take lives. These events have been happening more frequently in recent years.
The first fall frost has been arriving later in recent years, changing the timing of the growing season. Get the scoop on where this is happening.
Arctic Sea Ice
Sea ice is typically thinner in mid-September each year. Since 1979, the duration of the Arctic sea-ice melt season has lengthened by more than a month.
Human Influence on Climate
Human influence on the climate system is an established fact, but reducing greenhouse gas emissions can help limit climate change.
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.
Learn about some of the key, foundational concepts related to climate change.
Get to know the main drivers of climate change and how they contribute to a warming climate.
As the climate changes, U.S. regions will experience that change differently.
Scientists regularly monitor our environment, and their findings reveal much about how the climate is changing.
The CIRA project quantifies the physical effects and economic damages of climate change.
EPA has organized answers to some common questions about climate change on a single page.
The following links exit the site.
- Climate Science Special Report
- Fourth National Climate Assessment
- The Impacts of Climate Change on Human Health in the United States: A Scientific Assessment