James Bigley dives into the Tonkawa Tribe’s land legacy and how it helped shape Texas history.

Under the Great Plains, there's an aquifer powering the region's agriculture system. But it's running out of water, prompting farmers in middle America to consider more environmentally friendly crops.

A new day was dawning, he preached. The earth would be renewed, free and open for the tribes of the plains, and the buffalo would return. Indian people had suffered enough.