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How Luminol Works

science.howstuffworks.com/luminol.htm

Have you seen investigators on crime shows who spray some stuff on a "clean" carpet and suddenly -- blood stains! Well, of all the fictional technology on TV, it turns out this stuff is real! Find out how luminol reveals the blood.

Why Is the Sky Blue?

science.howstuffworks.com/nature/climate-weather/atmospheric/sky.htm

We've all probably looked up and wondered why the sky is blue instead of, say, brown. The sky is blue because of the way Earth's atmosphere scatters light from the sun.

How X-rays Work

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X-ray machines seem to do the impossible: They see straight through clothing, flesh and even metal, thanks to some very cool scientific principles at work. Find out how X-ray machines see straight to your bones.

12 Of The Most Mind-Blowing Scientific Theories Ever Conceived

science.howstuffworks.com/dictionary/12-of-the-most-mind-blowing-scientific-theories-ever-conceived.htm

As much as we might like to think that our collective knowledge has unlocked most of the mysteries of the universe, we've really only got a hold on a tiny fraction of the knowledge required to fully understand it all-and it's a weak hold at best. But every once in a while a new theory [...] The post 12 Of The Most Mind-Blowing Scientific Theories Ever Conceived appeared first on Goliath.

How the Ozone Layer Works

science.howstuffworks.com/environmental/green-science/ozone-layer.htm

We hear about the ozone layer all the time. But, what is the ozone layer and what are the ozone layer's components?

How Warp Speed Works

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Warp speed would enable you to travel faster than the speed of light. Learn about warp speed and whether it's a scientific possibility or just a sci-fi dream.

How Plague Works

science.howstuffworks.com/life/cellular-microscopic/plague.htm

You may be familiar with the medieval "Black Plague," but did you know that bouts of plague still break out today? Find out what causes an outbreak, why plague still exists and how the plague has influenced history.

Can a planet float on water?

science.howstuffworks.com/dictionary/astronomy-terms/floating-planet.htm

The floating planet theory states that a planet that is light enough should be able to float on water. Learn about the floating planet theory.

Researchers Find First (Potential) Planet Outside the Milky Way

science.howstuffworks.com/first-planet-outside-milky-way-news.htm

Using the Chandra X-ray Observatory, a team of scientists discovered what could very well be the first exoplanet outside the Milky Way. It's massive and might even orbit a black hole.

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