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10 Types of Metal (and We Don't Mean the Music)

science.howstuffworks.com/types-of-metal.htm

Metals are everywhere—in the wires in your walls, the pans in your kitchen, and even in your blood. These types of metal are defined by their atomic structure, properties, and how they interact with other elements.

8 Frog Species and Toads You'll Find in North America

animals.howstuffworks.com/amphibians/frog-species.htm

Frogs have been hopping around the planet since the Early Triassic, making them one of the oldest extant amphibian lineages. With more than 7,000 frog species globally, they’ve adapted to nearly every environment on Earth, from tropical rainforest canopies to forest floor ponds.

Where Do Potatoes Originate From? Not Ireland

recipes.howstuffworks.com/where-do-potatoes-originate-from.htm

Where do potatoes originate from? The question takes us back thousands of years to the high plains of South America.

The Youngest Olympian Was an Unnamed 7-Year-Old

entertainment.howstuffworks.com/youngest-olympian.htm

While the name of the youngest Olympian ever remains a mystery (more on that in a moment), there's still a long record of extremely young athletes who have managed to qualify, compete, and even win medals at the Olympic Games.

How Does an Invisibility Cloak Work?

science.howstuffworks.com/invisibility-cloak.htm

With optical-camouflage technology, the invisibility cloak is a reality. Learn what it is.

Comfrey: Herbal Remedies

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

Comfrey can be used in herbal remedies that topically heal bones and wounds more quickly. Learn more about how to use comfrey roots.

Fennel: Herbal Remedies

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

Fennel can be use in herbal remedies for digestion problems and is often used as in bulk seed form. Learn more about fennel and how it can help.

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.

What makes certain foods so expensive?

recipes.howstuffworks.com/menus/certain-foods-so-expensive.htm

What makes certain foods so expensive? Here's the skinny on the price of certain foods. Learn why certain foods are so expensive.

How Long Do Helium Balloons Last?

science.howstuffworks.com/question10.htm

Scenario: A helium balloon is up against the ceiling one day, and the next day it's on the floor. Does the balloon fall because the helium leaks out, or because the helium molecules slow down due to decreased pressure?

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