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We see faces in clouds, on buildings - heck, in grilled cheese sandwiches. But why is that? And how is this a help to our survival?

A killer smog 70 years ago helped lead to the first federal air pollution laws.

HowStuffWorks explores little-know facts about belly buttons, like why there is lint inside and why some people don't have a navel.

'Your call is very important to us...' Uh, really? Then why are you still on hold? HowStuffWorks looks at the art and science of being put on hold.

To control the weather we would have to come up with some technology straight out of science fiction. Find out if we can control the weather.

Many scientists say that the response to climate change will require planting new trees. A whole lot of them.

The 'Close Before You Doze' campaign is on a mission to get you to sleep with your bedroom doors closed. Why? Fire safety.

Burning some essential oils around your home may make it smell really nice. But could there be some side effects you should be worried about?

It's a slippery proposition, to be sure, but bees do it, birds do it and you can bet that eels do it too. The question is, how?

American TV viewers are bombarded with political ads during the lengthy campaign season. But do these ads really make a difference to voting habits?

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