It seems a little off-the-mark to celebrate a centennial for a place that is millions of years old. But February 26, 1919 was the day legislation was signed making Grand Canyon a national park.
And while plenty of people celebrate the centennial, there's also a crowd that would rather see federal lands, particularly in the west, turned over to states and counties for resource use. That is the tension at the heart of Stephen Nash's book .
The tension is greater because of both climate change and the fossil-fuel-friendly nature of the Trump administration. Stephen Nash visits to lay out the struggle and the sides.