The photos I chose of the Grinnell Glacier in Glacier National Park show how much glaciers have been shrinking over the last hundred years. The first picture from 1910 shows a thick sheet of ice that fills out the valley and reaches up to the cliffs. By 2016 most of the glacier has already melted and a large glacial lake had formed. And the most recent photo from Google maps in 2022 shows even less ice and more exposed rock and more melted water. These changes are an example of glacial retreat, which is when a glacier melts faster than it can rebuild itself through the snowfall and all the accumulation of ice.The main problem is that glaciers are retrieving quickly due to climate change the rising and global temperatures caused by greenhouse gases, such as carbon dioxide and methane in those are warming up the atmosphere. This means the longer months, seasons, and less snow to replace what has been lost. Glaciers are some of the most important forms of water due to they hold freshwater and slowly release it into rivers and streams. As the glaciers shrink less water is available for ecosystems, which means less farming and less freshwater for those who depend on it. The melting threatens wildlife and the freshwater supplies which help stabilize the landscapes. Seeing all these photos side-by-side makes the reality of climate change clear. It’s one thing to read about melting glaciers, but it feels more rare when you see multiple images of how it changed over such a short time.The melting also adds a rise in sea level, which creates flooding coastal damage far from the mountains.The retreat of the Grinnell Glacier shows how rising temperatures are reshaping our world if this continues, we risk losing natural wonders and a freshwater source, which makes understanding interest in climate change are even more important. WE NEED AS MUCH FRESHWATER AS POSSIBLE!!!!!!