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Posts tagged hemoglobin

June 16, 2016


green light

Green as Blood

Insect blood is green, and gets its color from the plants it eats.

April 1, 2016



You Gotta Have Hearts

Octopuses use three hearts to keep their bodies well circulated.

November 26, 2015


luminol splatter

A Moment of Crime

Investigators shine a light on crime scenes mysteries with the help of luminol—a luminescent chemical that reacts with blood.

May 30, 2013


insects pinned to a board

Why Is Insect Blood Green Or Yellow?

You've probably heard someone use the phrase "blood red," but have you ever wondered if all blood really is red in humans?

April 25, 2013


Colorado mountains

What Causes Altitude Sickness?

Many indigenous people live in areas of low oxygen concentration with few adverse effects. The big question is, how do they survive?

May 11, 2012


mount everest

Two Climbers Climbed Everest Without Supplemental Oxygen. How?

Although Everest had first been climbed in 1953, this was the first successful ascent to be made without supplemental oxygen.

April 18, 2011


nodules on plant stem

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.

March 1, 2011


kids dressed up for halloween

Vampire-Like Symptoms Occur With Hereditary Porphyria

The legend of the vampire, Dracula, may have had its basis in a very real disease known as Hereditary Porphyria.

June 5, 2008


An green bruise after giving blood

Green Bruises

If blood is either red or blueish, depending on the presence of oxygen, why are bruises sometimes black, green, brown, or even yellow?

August 7, 2007


Emergency personnel at car accident

Plastic Blood

Scientists are developing a type of artificial blood for use in emergencies. Learn more on this Moment of Science.

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