Kevin McMullen, MD
What life invents — and what the universe allows.
| Platform |  | Pricing | Only free issues | Publishes | Twice weekly |
|---|---|---|---|---|---|
| Issues | 68 | Founded | 9 months ago | Last Issue | 9 days ago |
| Active | |||||
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astrodermatologist.substack.comLatest Issues
Plants Might Have to Be Green
I’m the weird guy with the crazy camera at your local botanical garden…
Green. It calms the nerves. Put an anxious talking ape in a meadow and watch its blood pressure fall. Green brings life.
Plants are green because chlorophyll a...
Why Build an Observatory?
Which driveway is it? You’ll know.
What am I even doing?
Just a few minutes ago I walked over to my office under the observatory dome to write an essay. I looked up at the silver monstrosity in the front yard and thought, “Why am I doing...
Earth Has Been Computing for Four Billion Years
Watch your step
Tortoise beats hare. Everybody knows that.
An army of monkeys eventually produces Shakespeare. Also easy.
Evolution eventually produces complexity.
Records screech, eyelids quiver.
You can’t SAY that.
Evolution is blin...
Every Professor in Every Popular Science Book
I’d take his class, but it starts at 7:30AM
He was a slight man with an unfortunate mustache and the patchy stubble of a rebellious fourteen year old. Curious blue eyes pierced through ponderous, academic brows. An unkempt coif of salt and...
Elon Musk Is Poor
Elon Musk is poor. Or rich. Or something. Big numbers are weird and I can’t picture them.
Let’s play with trillions.
$1.3 trillion, as of writing. That’s a big number, usually. Or it’s small.
I want to do division.
The Earth is 1...
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Authors
The writers behind this newsletter.
Dermatologist and astrophotographer in Montana, exploring evolution across scales.
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