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Why are we violent?

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Why are we violent? Is it something we learn, or are people violent at birth? Find out why we are violent at Discovery Health.

Why Is Biodiversity Important for Ecosystems?

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Biodiversity means rainforests and reefs teeming with species right? There's more to it than that though. Genetic diversity has a big role to play, too. Just ask that cheetah cub.

What is relativity?

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Relativity is the famous theory that was created by Albert Einstein. Learn about relativity in this article from HowStuffWorks.

Why Do Music and Art Move Us?

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Music and art often elicit strong emotions in an audience. Learn why music and art move us.

Is war murder?

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Is war murder, or are soldiers exempt because of certain rules? Find out if war is murder in this article from HowStuffWorks.

What are emotions, and why do we have them?

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What are emotions? What is their purpose? Read this article to learn about emotions and the reasons why we have them.

What Was the First War?

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Did humans invent war out of necessity, or was it invented purely to take advantage of someone else? Find out why we invented war in this article.

How did language evolve?

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Let's assume that long ago Homo sapiens communicated by grunting at one another. How and when did all those grunting sounds evolve into a verb tenses, clauses and proper nouns?

Why is water vital to life?

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We know water is vital to life on Earth, but have you ever wondered why? Find out why water is vital to life on Earth in this article.

Green Science Pictures

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This green science image gallery shows eco-friendly applications as they apply to scientific disciplines. Take a look at these green science pictures.