Beat the summer heat by going underground. Arizona is home to famous caves, like Kartchner Caverns. Here are 5 of the best ...

Venus and the moon will appear together in the sky May 18 in a celestial conjunction visible across the US. Here's what to ...

For years, travelers chasing roadside oddities along Route 66 could spend the night 210 feet underground in what was billed ...

Explore five top Pennsylvania state parks and outdoor destinations for an affordable vacation, even with higher gas prices.

These desert mountain towns offer hiking, fishing, affordable lodging, and sweeping views of the White, Mazatzal, Huachuca ...

Venomous snakes? Plenty. Crowds? Not so much. Here’s a snake-infested state with several spots that deserve a closer look.

Northern Arizona’s reputation as an adventure destination often begins – and ends – with Grand Canyon National Park. But ...

Missouri has its very own Grand Canyon, and most folks drive right past it without even knowing it’s there. Grand Gulf State ...

After devastating wildfires swept through the Grand Canyon’s North Rim last summer, hikers returned to find a scarred but ...

The National Park Service announced on May 12 that the body of an Arizona State University student who had been missing for ...

The water problem at Pinyon Plain uranium mine, near the Grand Canyon continues. More than 80 million gallons were pumped out ...

An Arizona State University student vanished on a trip to the Grand Canyon 10 days ago — failing to return in time to take his finals and attend an interview for a job he wanted. Sandarsh Krishna, 26, ...