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How the African Diamond Trade Works

money.howstuffworks.com/african-diamond-trade.htm

Blood diamonds in Africa are sold illegally to fund civil wars and terrorism. Find out about blood diamonds in Africa and the African diamond trade.

How Your Heart Works

health.howstuffworks.com/human-body/systems/circulatory/heart.htm

The heart is a vital organ that basically serves as a pump. Learn about heart chambers and valves, blood flow, heart's electrical system and blood supply.

Strokes Overview

health.howstuffworks.com/mental-health/neurological-conditions/stroke.htm

Stroke is the third leading cause of death in the United States and the leading cause of permanent disability. See if you're at risk for a stroke.

Amphibians vs. Reptiles: Do You Know the Actual Difference?

animals.howstuffworks.com/wild-animals/amphibians-vs-reptiles.htm

Let's dig into the key traits, differences and surprising similarities of these cold-blooded creatures.

Diuretics

health.howstuffworks.com/diseases-conditions/cardiovascular/blood-pressure/diuretics.htm

Diuretics help to control high blood pressure. Learn more about diuretics at Discovery Health.

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.

Herbal Remedies for Diabetes

health.howstuffworks.com/wellness/natural-medicine/herbal-remedies/herbal-remedies-for-diabetes.htm

Read about herbal remedies for diabetes that help improve blood sugar metabolism and general health.

How can plane travel increase the risk of heart attack?

health.howstuffworks.com/diseases-conditions/cardiovascular/heart/plane-travel-heart-attack.htm

How can plane travel increase the risk of having a heart attack? Learn why plane travel encourages blood clots that can increase the risk of heart attack.

How can llamas help defeat biological weapons?

science.howstuffworks.com/bio-llama.htm

Sure, llamas are our friends. But little did we know that these fuzzy, camel-like creatures might save us all should the End come in the form of a biological attack.

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