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The history of cola is full of interesting tidbits and over one hundred years of facts. Learn all about the history of cola at HowStuffWorks.

How often should I stop to walk my pet on a long car trip? Stop every two hours so your pet can relieve itself and play. Learn more pet travel tips.

Are you thinking about installing french doors in your home? Learn how installing french doors works at HowStuffWorks.

What's a zero-gravity massage chair? It reclines to make you feel as though you're floating. Learn how the zero-gravity massage chair works.

Some people use their will as an opportunity to send a message from beyond the grave. Learn about 9 strange last wills and testaments.

The 1968-1969 Dodge Charger was a high-powered car with tons of attitude. Learn more about the 1969-1969 Dodge Charger at HowStuffWorks.

Presidential candidates face their first big test during the Iowa caucuses. Our primer explains the workings of this piece of the election process.

Greg Norman did not take up golf until he was 16 years old. Learn why Greg Norman was better known for how he lost than how he won.

Sleep can be affected by diabetes. Learn more about sleep and diabetes from Discovery Health.

Learn about dealing with the loss of a loved one with tips from Discovery Health.

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