FOURTH NATIONAL CLIMATE ASSESSMENT https://nca2018.globalchange.gov "Communities, governments, and businesses are working to reduce risks from and costs associated with climate change by taking action to lower greenhouse gas emissions and implement adaptation strategies. While mitigation and adaptation efforts have expanded substantially in the last four years, they do not yet approach the scale considered necessary to avoid substantial damages to the economy, environment, an

This Climate Science Special Report, released by 13 federal agencies on Friday, is part of the quadrennial National Climate Assessment. “This assessment concludes, based on extensive evidence, that it is extremely likely that human activities, especially emissions of greenhouse gases, are the dominant cause of the observed warming since the mid-20th century,” the report states. Read the full report: https://science2017.globalchange.gov/downloads/CSSR2017_FullReport.pdf https: