Nov. 23, 2018 – “Policymakers can no longer afford to dismiss or ignore the overwhelming scientific evidence of climate change. The science on climate is clear, and we must face the facts in order to address the risks. We welcome the 4th National Climate Assessment and the work of scientists at federal agencies, national labs and academic institutions who provide significant research findings that increase our understanding of how climate change is affecting the United States and the world. ”

“We will continue to implore decision-makers at all levels – local, state, regional and national – to use scientific evidence as they find opportunities for communities to respond effectively to climate change. The scientific community stands ready to help inform your choices.”

— Rush Holt, chief executive officer, American Association for the Advancement of Science (AAAS)

Read the 4th National Climate Assessment:

The American Association for the Advancement of Science (AAAS) is the world’s largest general scientific society and publisher of the journal Science, as well as Science Translational MedicineScience Signaling; a digital, open-access journal, Science AdvancesScience Immunology; and Science Robotics. AAAS was founded in 1848 and includes nearly 250 affiliated societies and academies of science, serving 10 million individuals. Science has the largest paid circulation of any peer-reviewed general science journal in the world. The nonprofit AAAS is open to all and fulfills its mission to “advance science and serve society” through initiatives in science policy, international programs, science education, public engagement, and more. For additional information about AAAS, see