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Posts tagged blood

April 12, 2012

 

b

Bare Feet: Why So Warm

What keeps penguin's feet from freezing? Penguins' feet don't freeze because of the blood circulating in them.

March 26, 2012

 

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The Sound Of Pressure

Have you ever been squeezed by a sphygmomanometer?

December 16, 2011

 

At high altitudes, fluid can accumulate inside a mountain climber's lungs, preventing oxygen from entering the blood.

All About High Altitude Pulmonary Edema: HAPE

When fluid blocks the passage of oxygen into the lungs, the resulting suffocation is known as drowning, whether or not the person is submerged in water.

November 29, 2011

 

Reach for rubbing alcohol when you want to clean a wound.

Why Does Rubbing Alcohol Make A Good Antiseptic?

Oddly enough, a solution of 70% alcohol, that is, rubbing alcohol, is a more effective antiseptic than 100% alcohol. Another case of where more is not better.

November 17, 2011

 

The vampire bat uses its nose to look for prey.

How Do Vampire Bats Use Their Noses To Detect Prey?

They prowl in the dark, soar through starlit skies... they are vampire bats and they're looking for blood!

August 31, 2011

 

Which Is Healthier: Standing Or Sitting

There's mounting evidence that long stretches of inactivity are not good for you, even if you're not overweight and seem basically healthy.

April 18, 2011

 

Nitrogen-Fixing Bacteria Perform Valuable Service

The bacteria take nitrogen out of the air and make it available to other living organisms in an amazing process.

April 6, 2011

 

Why Do I Sometimes See Tiny Moving Dots?

Those tiny dots are actually blood cells moving in the retina of your eye.

September 23, 2010

 

Rat Whiskers Prevent Stroke!

Scientists are experimenting with rat whiskers. The have found that they stop a stroke from occurring. Cool, right? But, would it work on humans?

January 19, 2010

 

Blood Is Thicker Than Water

On this Moment of Science, we'll learn how the phrase "blood is thicker than water," applies to the natural world.

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