Showing posts with label photosynthesis. Show all posts
Showing posts with label photosynthesis. Show all posts

August light

This one's from two Augusts ago.


The days fade quickly now--in three weeks we'll have an hour less sunlight gracing us than today.

We will assault children with a sterile view of science, reduced to a method and streams of vocabulary, "ideas" we can test.

The sun slides south without notice as we huddle under the subtle, damning hum of fluorescent lights, each one filled with vaporized mercury, coated with phosphor, a steam punk amalgamation of  early 20th century technology and vision.

We talk little of either, the sun or the hum, the light of our lives.
***

Here's the heart of biology: We're matter put together in an orderly fashion by light. When light fades, we fall apart.

Follow the energy--the breath you take brings in oxygen that allows you to convert the toast you ate this morning back into carbon dioxide and water. You literally breathe out a few bites of your breakfast  by noon.
Wheat grown in our classroom

The toast, of course, is mostly wheat--these days we take out the best part of the grain and feed it to animals (flour keeps better on the shelves this way), but what's left over , is still wheat, a plant, like most plants, that combines carbon dioxide and water into marvelous strands of carbon compounds, weavers that rival Rumpelstiltskin--the miracle is in the flax, not the gold.

And yet when we talk of "photosynthesis" the kids groan under the weight of the terms: photolysis, ATP synthase, electron chain transport, chemiosmosis....sighing vast quantities of carbon dioxide molecules, drooling on the desks.

Yes!...there's your breakfast, in the sighs, in the drool!
***

The fading light is not metaphorical--it is real. Outside the classroom windows the living world is dying, as it does every fall. The hunger season is coming.


We start the school year in late summer, as we do, as our bodies, still untamed, feel the dying light. We pretend otherwise, talk of the "new year" and of "objectives" and "benchmarks"--as the sun slides slowly south, the shadows lengthen ominously, and the ice returns.

We teach children to stop paying attention to what matters, to focus on the trivial. That is how you survive in a world of concrete and glass, in a world where many of our children would not recognize their breakfast in its raw form.

Biology is the study of life--let's shine our light on what matters.





Back to school is a bittersweet time...








Food for thought

Wheat from our winter classroom windowsill.

Some abstract intangibles:
Light
 Electrons
Inertia

If you think you know light, but see the world as solid, you do not know electrons.
If you think you know electrons, but imagine them as circling protons like planets, you don't know inertia.
And if you don't know inertia, you cannot know mass.


Which is OK--few people do, and I am not one of them, but we all pretend we do in high school science, and we test kids like they do, and we reduce science to something mystical and powerful, creating a nation that believes in ghosts and astrology.

Gardens remind us--from seeds in February to fruit in July


Some concrete tangibles:
Water
Air
Bread
Bread is made of air and water, and little else.

Oh, we can delve into the specifics of photosynthesis and CO2 and fermentation and all that good stuff we love to test, but in the end, the miracle is the stuff around us comes together, the stuff around us falls apart.

Doesn't take a high school diploma to see this, but plenty with advanced degrees do not.

From the bay, from the backyard.

And we're all paying for their ignorance.





When was the last time Gregory R. Page, the CEO of Cargill, had a loaf of bread from freshly ground wheat?














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