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Important and alarming piece by

. One problem: LED lights are supposed to reduce energy use because they are 75% brighter per watt. But everywhere I go I see outdoor lighting that is 2 or 3X brighter than it was when using incandescents.

scientificamerican.com

Light Pollution Is Dimming Our View of the Sky, and It’s Getting Worse

Citizen scientists and researchers found that we are losing our view of the sky at an astonishing rate of almost 10 percent each year

1:42 PM · Feb 1, 2023

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Replying to

mentions (and

discusses in his new book) outdoor lights are really bad for birds and other wildlife. So turn off those outside lights (esp during migration seasons). And advocate for appropriate lighting in your community:

rockies.audubon.org

How to Make Your Outdoor Home Lighting Bird-Friendly

Learn about shielding lights and other ways to make your outdoor lighting more bird-friendly.

Replying to

and

That's an interesting point, but your math isn't right. "75% less energy" (at minimum) does not equal "75% brighter." It's four times brighter per watt.

Replying to

and

I envision a future where night vision goggles become so cheap and small that they are like sunglasses. And everyone wears these sunglasses at night and outdoor lighting is banned or at least obsolete