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Motorcycles are an increasingly popular form of transportation. Learn about motorcycles and motorcycle types, and check out pictures of motorcycles.

Surrogacy involves a woman carrying a child for others who cannot conceive. Learn about the types of surrogacy in this article.

Perennial flowers return to bloom each year. Learn the different types of perennials, and which ones are right for you.

A master key can open many different types of locks. Find out how a master key works.

Dogs lick humans for all types of reasons. But do they really lick us to tell us they love us?

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

Diamond pictures shows you some of the different types of diamonds. Check out our collection of diamond pictures

Communism is a type of government that relies on collectivization of labor and good to equal out the classes. Learn about the workings of communism.

Motion sickness can occur in almost any type of transportation. Learn tips to help avoid this uncomfortable state.

No, a tardigrade's not a type of time-traveling police box on "Doctor Who." It's an ancient water bear, of course!

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