FLATOW: And so give us - jump in our time machine ... out to the Grand Canyon and go on a raft, and you go to a spot, and you describe it, and then someone else comes along and says, oh, this is ...

Hill and her colleagues used the dates to propose that an earlier river had begun to carve out the western end of the Grand Canyon around 16 million to 17 million years ago. Around 6 million years ...

For nearly 2 million years, the Gunnison River carved through the soft volcanic ... Due to low light pollution and open sky, Black Canyon of the Gunnison is an amazing place to see the stars!

Karlstrom was part of the team that developed a walking path called the Trail of Time along the south rim of the Grand Canyon. Signs there tell visitors that the Colorado River carved the Grand ...

Tyrannosaurus Rex may have once hung out in the Grand Canyon. A new study suggests the western portion of the canyon may be 70 million years old and may have been carved by an ancient river ...

Sitting near the head of the Grand Canyon, the Kaibab uplift is a 650-foot (250-meter) barrier that any prehistoric lake or river must have carved through ... getting figured out by the geologic ...