Gulf Coast States

For the most part, the Gulf Coast states are a recent addition to the landmass of North America. Florida, for example, is primarily a long limestone ridge that only rose above the water a few million years ago and is still only about 400 feet above sea level at its highest point. The Appalachians that run across the northern parts of Georgia and Alabama have been above the water for hundreds of millions of years.

When you get down along the Gulf Coast itself, the marks of impending climate change are everywhere. Another 100 years like the last 100 years and half the Gulf Coast states will be under water, the rest unlivable because of temperature and drought.

Atchcafalaya National Wildlife Refuge, Louisiana