It's a vast system of chasms five times longer and 10 times wider than the Grand Canyon, and scientists think it formed in a similar way. Billions of years ago, Mars was warmer, and covered with ...

al. An arrowhead-shaped rock on Mars sporting features that may hint at ancient microbial activity on the Red Planet has left ...

Three members of a South Korean family visiting the United States have been missing for more than a week after driving through a winter storm while on a road trip between the Grand Canyon and Las ...

A family of three visiting the United States has been missing for over a week after leaving the Grand Canyon on a road trip and driving through a winter storm, officials in Arizona said.

The three women were traveling on vacation from the Grand Canyon area to Las Vegas on the day of their disappearance, according to the department. “We have visitors from all over the world that ...

As for John Wesley Powell, sooner or later his legacy as conqueror of the Grand Canyon will be fully realized on the red planet. Mars has its own canyon, far grander than ours: Valles Marineris ...

A variety of companies offer helicopter tours of the Grand Canyon, with many options departing from Grand Canyon National Park Airport (located in Tusayan) and most Las Vegas hotels. Read on to ...

Rafting on the white water rapids of the Colorado River in Grand Canyon National Park ...

A South Korean family has mysteriously disappeared after a visit to the Grand Canyon. Jiyeon Lee, 33, her mother Taehee Kim, 59, and aunt Junghee Kim, 54, were on vacation in the United States ...