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A Humongous Fungus Among Us

Did you ever wonder what the world's largest organism is? If we had to guess, maybe we'd pick an elephant, a giant sequoia or a whale. Well, those choices would be wrong; this organism is actually a fungus! It was decided in 1992 that Armillaria bulbosa, a soil fungus, was the world's largest organism. It was found in a northern Michigan hardwood ...

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AHumongousFungus
Biology

Why Aren't Mice More Like Us?

The sequence of the human genome was published two years ago, and recently, the sequence of the mouse genome was published. Amazingly, 99% of mouse genes have a counterpart in people. So why are they ... Continue reading

Mice
Chemistry

Uses Of Hydrocarbons

The hydrocarbons are the most broadly used organic compounds known, and are quite literally the driving force of western civilization. The greatest amounts of hydrocarbons are used as fuel for ... Continue reading

UsesOfHydrocarbons
Chemistry

Hydrogen Reaction Experiment Reaps a Surprise

Scientists got a surprise recently when a team of physical chemists at Stanford University studied a common hydrogen reaction. Scientists got a surprise recently when a team of physical chemists at ... Continue reading

HydrogenReactionExperiment
Geology

Seamounts - Underwater Mountains

Seamounts are undersea mountains that rise from the ocean floor, often with heights of 3,000 m or more. Compared to the surrounding ocean waters, seamounts have high biological productivity, and ... Continue reading

SeamountsUnderwaterMountains

What Is Acetone?

WhatIsAcetoneAcetone is a manufactured chemical that is also found naturally in the environment. It is a colorless liquid with a distinct smell and taste. It evaporates easily, is flammable, and dissolves in water. It is also called dimethyl ketone, 2-propanone, and beta-ketopropane. Acetone is used to make plastic, fibers, drugs, and other chemicals. It is also used to dissolve other substances.

It occurs naturally in plants, trees, volcanic gases, forest fires, and as a product of the breakdown of body fat. It is present in vehicle exhaust, tobacco smoke, and landfill sites. Industrial processes contribute more acetone to the environment than natural processes.

If you are exposed to acetone, it goes into your blood which then carries it to all the organs in your body. If it is a small amount, the liver breaks it down to chemicals that are not harmful and uses these chemicals to make energy for normal body functions. Breathing moderate- to-high levels of acetone for short periods of time, however, can cause nose, throat, lung, and eye irritation; headaches; light-headedness; confusion; increased pulse rate; effects on blood; nausea; vomiting; unconsciousness and possibly coma; and shortening of the menstrual cycle in women. Swallowing very high levels of acetone can result in unconsciousness and damage to the skin in your mouth. Skin contact can result in irritation and damage to your skin. The smell and respiratory irritation or burning eyes that occur from moderate levels are excellent warning signs that can help you avoid breathing damaging levels of acetone.