Search Results | substance
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How Much Water Is on Earth?
science.howstuffworks.com/environmental/earth/geophysics/question157.htm
Water is one of the most abundant substances on the planet. About 70 percent of our planet is covered by oceans, but just how much water is there on Earth?
Does Bottled Water Go Bad?
science.howstuffworks.com/environmental/green-science/bottled-water-go-bad.htm
You may have seen an expiration date on your bottle of water, but why? Can a natural substance like water really go bad?
Are there really hallucinogenic frogs?
animals.howstuffworks.com/amphibians/hallucinogenic-frog.htm
'Hallucinogenic frogs' excrete a toxic substance that has psychoactive qualities. Learn how hallucinogenic frogs can get you high or possibly kill you.
Yang Organs Overview
health.howstuffworks.com/wellness/natural-medicine/chinese/yang-organs.htm
The yang organs, in traditional Chinese medicine, separate impure substances from food and drain them from the body. Learn how yang organs work.
10 Common Skin Irritants
health.howstuffworks.com/skin-care/problems/medical/10-common-skin-irritants.htm
Skin irritants could be a chemical, a surface or a substance to which you're allergic. See 10 common skin irritants you should you avoid.
How much fluoride is too much?
health.howstuffworks.com/wellness/oral-care/products/how-much-fluoride.htm
How much fluoride is too much? Find out why there is so much debate about this ubiquitous substance -- and how much fluoride is too much.
What Is Whiskey Fungus and Is it Dangerous?
science.howstuffworks.com/life/biology-fields/whiskey-fungus.htm
Distilleries call this evaporative substance "angel's share" and promise that it's not dangerous, but nearby residents find it coating everything around them and aren't so sure.
Why Is Ambergris (Whale Poop) So Valuable?
animals.howstuffworks.com/mammals/ambergris.htm
If you're wandering on the beach and happen upon a large mass of some sort of waxy substance, take a closer look. It could be the rare 'floating gold' of the sea: ambergris.
Where does earwax come from?
health.howstuffworks.com/human-body/systems/ear/where-does-earwax-come-from.htm
Earwax might seem like just another gross bodily substance, but it serves a very important function. Learn where earwax comes from at HowStuffWorks.
How to Remove Blood Stains
home.howstuffworks.com/how-to-remove-blood-stains.htm
Blood stains are one of the most difficult type of substances to remove from an item, fabric, or surface. However, removing blood can be accomplished with some help. Follow these tips to erase blood stains.