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For a seemingly basic food product, bottled water has generated its share of controversy. Find out why.

Microlending is a new type of lending that has entered the scene. Learn how microlending works and what risks are involved.

The use of political attack ads has shot up in recent years. Are these negative political attack ads effective?

The Ironman is a multisport trial. The triathlon has replaced the marathon as the greatest test of endurance. Learn what it takes to be an Ironman.

I have a dirt bike, and the exhaust pipe has this big bulge in it near the engine. What is the bulge for?

Theanine is found in green tea and has positive effects on anxiety. Learn about theanine, a supplement for soothing anxiety.

Work by volunteers and nonprofits, such as butterfly waystations and education efforts, has reversed population decline for some butterfly species.

The number 137, which is significant in multiple applications, has long been an object of fascination for physicists, mathematicians and mystics.

Perhaps no other beast has been more wildly mischaracterized in popular culture than the crested predator Dilophosaurus.

Was there a real Atlantis? Read about the search for the lost city of Atlantis and why it has obsessed scientists and historians for centuries.

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