I know that some people believe what that want to believe and disregard facts. I call them libtards. So for the non-libtards, here are some glacial facts.
Fact 1: It is a historical fact that the glacier in Glacier Bay began its retreat around 1750. By the time Capt. George Vancouver arrived there in 1794 the glacier still filled most of the bay but had already retreated some miles. [Hence the name of the bay]
By 1900 Glacier Bay was mostly ice-free.
The Huna Tlingit people have lived for more than 4,000 years around the Bay. In the oral tradition of the Huna Tlingit people, it is said that the glacier has advanced and retreated a number of times during their occupation of the area. [I am willing to take their word for it]
All of this happened long before human emissions of greenhouse gases, including carbon dioxide, could have had any impact.