www.miseagrant.com

The summer of 2009 was one of Michigan’s coldest summers on record. In June of the same year, the U.S. Global Change Research Program published a report stating: “Observations show that warming of the climate is unequivocal.”

How can scientists say climate is changing if a sweatshirt is needed to stay warm on a July afternoon?

This fact sheet explores the concepts of climate change and variability, what's normal when it comes to climate and why we want to learn about it in the first place.

Available printed or as a PDF (download here). Part of the Michigan Sea Grant Climate Change Fact Sheet Series.