A NOAA-led study finds that over the past 30 years, the location where tropical cyclones reach maximum intensity has been shifting toward the poles in both the northern and southern hemispheres at a rate of about 35 miles, or one-half degree of latitude, per decade.

Today, delivering on our legal mandate and the President’s Climate Action Plan, the U.S. Global Change Research Program released the Third National Climate Assessment, the most comprehensive, authoritative, transparent scientific report on U.S. climate change impacts ever generated. The report confirms that climate change is affecting every region of the country and key sectors of the U.S. economy and society.

By Dr. John P. Holdren and Dr. Kathryn D. Sullivan Today, the Obama Administration unveiled the Third U.S. National Climate Assessment (NCA)—the most comprehensive, authoritative scientific report ever generated about climate changes that are happening now in the United States and further changes that we can expect to see throughout this century...