Health & the Human Body « Previous Entries

Ear Wax

Tuesday, May 6th, 2008

Although Bertie Bott’s obviously thought that ear wax would make a very tasty jelly bean flavor, mother nature had quite a different purpose in mind for this helpful substance…

What is Ear Wax? 
The skin covering the outer part of the ear canal contains special glands that produce ear wax, a sticky, waxy substance also known as cerumen which is different […]

It’s a Gas!

Monday, May 5th, 2008

 
Pooting, Tooting, Farting, Breaking Wind, Cutting the Cheese, whatever you want to call it, the average person produces about half a liter of intestinal gas per day which is expelled in the form of flatulence about 14 times daily.
The following web links get into the science behind this smelly but vital bodily function:
Kidzworld: The Science of […]

Blue Food

Sunday, May 4th, 2008

 
George Carlin had a comedy bit about blue food.
“Why is there no blue food? I can’t find blue food — I can’t find the flavor of blue! I mean, green is lime; yellow is lemon; orange is orange; red is cherry; what’s blue? There’s no blue! Oh, they say, “Blueberries!” Uh-uh; blue on the vine, […]

How is your tongue like an inkjet printer?

Friday, April 11th, 2008

Most inkjet printers use only four basic ink colors - Cyan, Magenta, Yellow and Black. The printer combines these colors to represent each image pixel in various colors, shades, and intensities. The image is dithered, meaning the printer uses a pattern of several of its dots to simulate the color of each pixel in the […]

The Eyes Have It

Tuesday, April 8th, 2008

Another great scientific question from my ten-year-old; why are my eyes blue and my sister’s eyes brown? 
What determines a person’s eye color?
The color of a person’s eyes depends on the amount of a pigment called melanin present in the iris of the eye (melanin is also responsible for the coloring of our skin). At one end of the […]

Evolutionary Tail Fins?

Tuesday, April 1st, 2008

We sometimes forget that like everything else on Earth - not to mention the planet itself - we humans are a work in progress.  The following are nineteen body parts that are in the process of being deleted from our design…
VOMERONASAL ORGAN
A tiny pit on each side of the septum is lined with nonfunctioning chemoreceptors. They may […]

Science and the Urban Legend - Part II

Tuesday, March 25th, 2008

For your entertainment and edification, here are five more persistent yet patently false urban legends…

The Great Wall of China as seen from space by the ESA Proba Satellite
The Legend - The Great Wall of China is the only man-made object visible from the moon.

The Truth - From a low Earth orbit (160 to 350 miles […]

Science and the Urban Legend

Thursday, March 20th, 2008

The following are actual science related urban legends that have been circulated as truth - some of them for decades. All have been busted by various sources but as urban legends are wont to do, stubbornly persist to this day. Here are five particularly long-lived legends and the reasons they are BUSTED!
The Legend […]

You’ll catch your Death!

Tuesday, March 4th, 2008

Being that it’s cold and flu season, I thought it a timely opportunity to spread something other than germs - some knowledge!

A Cold Virus

Here are some common questions and answers about colds and flu (influenza):
What’s the difference between a cold and the flu?
A. Although both illnesses are caused by viruses, their symptoms and severity differ […]

Orange you a little yellow?

Monday, March 3rd, 2008

I knew a girl once who’s skin turned an orangey-yellow color because she had eaten so many carrots.  I kid you not! This relatively benign condition is called Carotenemia. My friend’s yellow-orange skin hue was a tell-tale sign of a beta carotene overdose resulting from her over-zealous carrot consumption. Beta carotene, along with other plant pigments generally called […]

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