Still, plenty of people around the world are taking precautions ahead of the day when the Mayan calendar ends and, the theory goes, so does life as we know it. Here, a look at some of the unusual ...

Explore the 12 most visited Mayan temple sites, uncovering their rich history, architectural marvels, and timeless mystique ...

Stunning discoveries and fresh breakthroughs in DNA analysis are changing our understanding of our own evolution and offering a new picture of the "other humans" that our ancestors met across ...

Discover Flagstaff, the world’s first international dark-sky city Discover Flagstaff, the world’s first international dark-sky city How to plan a trip to Sequoia and Kings Canyon National ...