Did King Arthur actually exist? Scholars have debated this question ever since the legend was born in the 9th century. ...read more

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The term 'organic' has a long history. Today, it involves more environmentally friendly practices, but not necessarily superior nutrition in your food. ...read more

Centuries before Columbus, a small band of Norse people explored the Canadian coast. For now, the only proof is a single settlement. Here’s what’s known about how the Vikings came to North America, where they landed and why they left. ...read more

A region of the ocean purported to swallow ships whole has fascinated us for decades. But is there any truth to the tales? ...read more

Two major urban centers flourished in pre-America during a time period that corresponds with the Middle Ages. Here's what's known about the rise and decline of these ancient metropolises. ...read more

Birds hit windows because they can’t tell if the glass is a solid object. Shiny skyscrapers in particular pose a significant risk to migrating flocks. But there are easy solutions that can prevent these bird-window strikes from happening. ...read more

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