The world doesn't have to be shrouded in mystery to be fascinating! Here are 6 mysteries that science has managed to solve.

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Artificial intelligences that play abstract, strategic board games have come a long way, but how do their "brains" work?

Scientists often use the phrase “anatomically modern humans” to describe the point when our ancient ancestors looked like us. But when did humans become behaviorally modern?

If you see something wrong in the workplace, what should you do? Business leader Angélique Parisot-Potter says you should speak up, even when it's scary. Sharing her personal experience of voicing concerns at work, she offers three...

Over the years, lots of explanations have been proposed as the origin of Stonehenge, including lost technologies, outright magic, and — of course — aliens. What do we actually know about this prehistoric mystery?

The Great Wall of China is a 13,000-mile dragon of earth and stone that winds its way through the countryside of China. As it turns out, the wall's history is almost as long and serpentine as its structure. Megan Campisi and Pen-Pen Chen...

Uncle Gobb and the Green Heads – Index

Stonehenge is one of the world’s most mysterious and iconic ancient monuments. Located in the English countryside, it was built over 4,000 years ago using massive stones, some weighing more than 25 tons. But who built it—and why? Was it...

Howcast - People have been digging wells since prehistoric times. If you're hoping to add a well to your backyard by doing it yourself, there are several ways -- both ancient and modern -- to make sure you never go thirsty.

Howcast - Learn about fashion house Bulgari in this Howcast video with expert Nancy Deihl.

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Howcast - Learn where and how to place the stones for a back massage from celebrity massage therapist Meagan Holub in this Howcast massage video.

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Howcast - Learn how hot stone massage therapy compares to deep tissue massage from celebrity massage therapist Meagan Holub in this Howcast massage video.

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Howcast - Learn how hot stone massage therapy compares to a Swedish massage from celebrity massage therapist Meagan Holub in this Howcast massage video.

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Howcast - Learn what happens during a hot stone massage from celebrity massage therapist Meagan Holub in this Howcast massage video.