Two Grand Canyon-size features on the far side of the moon were likely formed in about 10 minutes after an unknown object ...

Plan a winter trip to the Grand Canyon with our winter guide to the Grand Canyon. Don't let a little snow keep you from ...

Here's how they form! Oh yeah and I did the math wrong in comparing the size of the cave to the grand canyon, turns out I'm better at geology than I am at math, go figure. The grand canyon is ...

The Grand Canyon reminds us constantly that we are merely specks in the history of the earth and universe. When asked, I tell people the hardest thing about running the canyon is not the rapids ...

A variety of companies offer helicopter tours of the Grand ... Canyon. Once you land, you'll be served beverages (including sparkling wine) and light snacks. On the way back to the city, you ...