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Bruise easily? You may have thin skin ââ‚¬" a common problem associated with aging. Learn what causes thin skin and how to prevent it.

Are you wondering how anti-wrinkle serums work? Find out all about anti-wrinkle serums in this article.

Can you just be a social smoker? And what does it mean to be a social smoker? Find the answers to these questions at Discovery Fit & Health.

What has pitted heroes Batman and Superman against one another? Learn more in this HowStuffWorks Now article about conflict in the comic books.

The @ sign is so much a part of the internet that it may surprise you to know it's been around for at least 1,500 years.

It's perhaps one of the strangest fossils ever discovered. We'll explain how it came to be 15 million years ago, and how hikers found it in the '30s.

The design of the U.S. $1 bill is full of symbolism. HowStuffWorks breaks all the symbols down and explains the meaning behind all of them.

The stratosphere is one of Earth's five atmospheric layers that also includes the troposphere, mesosphere, thermosphere and exosphere.

The quantum internet would use the quirky behavior of tiny particles to enable applications not possible with today's internet.

Sailfish are the fastest known animal in the ocean. Just how fast? As fast as a cheetah. That's how fast.

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