Did you realize that calcium is actually a metal....

...which is one of the many reasons it is such a logical element to be utilized by the human body.

Its chemistry is such that it combines with many non-metals--phosphorus, chlorine, carbon, oxygen, and hydrogen, and others--to form such useful materials as bone in living things and many types of minerals in non-living. Its elemental properties make it a superb ion for use by muscles and nerves in the process of excitation-contraction coupling.
Calcium and chemistry--
make sure you are on board with both this weekend.

H2O + CO2 = TROUBLE!

=H2CO3, carbonic acid. Even "normal" rain is acidic!

The more CO2 or H+ (from any source, such as sulfuric and hydrochloric acids), the more acid the rain, the more damage to stone and other non-living objects. And living ones....
Increases in these substances are why the oceans are becoming more acidic.
Acids tear off electrons, destabilizing non-organic molecular structures and living systems such as cell membranes and the Krebs cycle.
We're melting!!

Dem bones, dem bones...

...dem wet bones.
Bones are not "dry"--they are very much alive. Good thing, too, because we depend on their actions every second of our lives.
In addition to providing support and strength, they are our major reservoir of calcium and phosphorus, the former required for nerve and muscle action and the latter to create energy. Be good to your bones today!

It's a gas....

...no, a solid!
no, plasma!
no, a liquid!

It's the Second Law of Thermodynamics!

Cool! (MORE ENTROPY!)

Ode to the Eosinophil

O granulocyte so lovely,
With thy cheerful reddish hue,
I am 'minded of thy beauty
Each time I go, "A-choo!"

Allergic rash thou giv'st to me
Anaphylaxis is thine, too,
Itching is your legacy
And swelling comes from you.

But still for thee I'm thankful,
Even tho' thou pain'st my neck,
For without thy red protection,
I'd surely hit the deck.

It's war!!

Basic Rules of Engagement
Look to your electrons!
Watch your valance shells and orbitals!
Conserve mass, charge, and energy!
Do it with moles!
One step at a time!
It really does make sense and we are the winners!

This guy...

...has to the most hated dead white man in history.
Avogadro.
'Nuff said.

Gimme some....

...SKIN!
The body's largest and perhaps most versatile organ, this guy does it all--secretes, excretes, absorbs, makes several proteins, cools us off, warms us up, makes us pretty, allows us to feel those shivers, and is critical to life and death!
Be good to your skin today!

More chemistry...

Ya gotta have heart....

...miles & miles & miles of heart!