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A proponent of the wind turbine shown at left writes:

I commented this 6 year’s ago . It is so simple even if you put in small stream 1 000 000 small turbines like this one, you will have more power. It’s the same for the wind , we don’t need this big huge wind Parks we need small efficient and most important easy for fixing and easy for installation. Not forgetting we can make smaller things with eco friendly materials.

Me:

There are a few reasons that claims like this are bullshit. The main one is that the power extracted from the wind is proportional to the square of the radius of the blades.  We recall from our childhoods the formula: Area (of a circle) = pi r-squared.  This is why real (not fictional) wind turbines are so large (and getting larger all the time).

Also, as I mention frequently, today’s wind turbines capture about 90% of the theoretically available kinetic energy from moving wind; given the laws of physics, there is no room for any significant increase in efficiency/output.

Even if neither of these were true, which would you rather cover the cost of maintaining: one large turbine or a million little ones?

The Case for Tiny Wind (or Hydro) Turbines

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Renewable Energy

Bravery Meets Tragedy: An Unending Story

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Here’s a story:

He had 3 days left until graduation.

STEM School Highlands Ranch. May 7, 2019.

Kendrick Castillo was 18. A robotics student. College bound. Accepted into an engineering program. The final week of school felt like countdown, not crisis.

Then a weapon appeared inside a classroom.

Students froze.

Kendrick did not.

Witnesses say he moved instantly. He lunged toward the attacker. No hesitation. No calculation.

Two other students followed his lead.

Gunfire erupted.

Kendrick was fatally sh*t.

But his movement changed the room.

Classmates were able to tackle and restrain the attacker until authorities arrived. Investigators later stated that the confrontation disrupted the attack and likely prevented additional casualties.

In seconds, an 18-year-old made a decision most adults pray they never face.

Afterward, the silence was heavier than the noise.

At graduation, his name was called.

His diploma was awarded posthumously. The arena stood in collective applause. An empty seat. A cap and gown without the student inside it.

His robotics teammates remembered him as curious. Competitive. Kind. Someone who solved problems instead of avoiding them.

He had planned to build machines.

Instead, he built a moment.

A moment that classmates say gave them time.

Time to escape.

Two points:

If you can read this without tears welling up in your eyes, you’re a far more stoic person than I.

Since Big Money has made it impossible for the United States to implement the same common-sense gun laws that exist in the rest of the planet, this story will reduplicate itself into perpetuity.

Bravery Meets Tragedy: An Unending Story

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Renewable Energy

Forced Transgendering of America’s Little Kids

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How often does this happen? How about never?

Trump loves to say that little boys go to school and come back home little girls.

He’s the most powerful person in the world for exactly one reason: We’re a nation of morons.

Forced Transgendering of America’s Little Kids

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Renewable Energy

Illegal Aliens and U.S. Veterans

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Two comments:

That the United States has homeless veterans is a national (and international) disgrace.

By definition, no one has the legal right to enter the U.S. illegally, but according to our constitution, everyone in America is entitled to due process.

Illegal Aliens and U.S. Veterans

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