Radio Country: 💡 Mice with human brain cells

Tuesday, September 22, 2026

💡 Mice with human brain cells

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Hello, Nautilus readers! Topics we explore in today’s edition: the possibility of AI’s consciousness, “ferritin face,” and vast, hidden deposits of fresh water.

The daily picks:

P.S. You can unlock all Nautilus articles by upgrading to a premium membership.

🩸 Health

> “Ferritin face” is trending—but can your skin really reveal low iron? (Read on Nautilus)

> The oldest evidence of drug use is also a story of addiction. (Read on Nautilus)

> To help manage hormone fluctuations, testosterone prescriptions are on the rise for women. So are denials. (Read on CNN)

🌊 Ocean

> Here’s why it’s so hard to know precisely how deep the ocean is. (Read on Nautilus)

> Our antidepressants may be harming fish. (Read on Nautilus)

> Ancient armored fishes crushed jaw evolution. (Read on Nautilus)

💭 Consciousness

> Could AI have consciousness that isn’t human-like? (Read on Nautilus)

> What Grok and Claude have to say about the AI apocalypse. (Read on Nautilus)

> You have two brains. (Read on Nautilus)

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💡 Only on Nautilus

> A 7-month wait for lunch.

> What do dolphins talk about?

> If only 19th-century America listened to a woman scientist.

Unlock them all

Today’s Trivia

🧐 In 1968, a committee based at Harvard University met to establish a definition of death. In their final report, the group described death as what?

A) “an irreversible coma”
B) “a quiet homecoming”
C) “the final freedom of breath”
D) “the enduring end of all function”

Click here for the answer.

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*Scientific claims made in ads are not researched, verified, or endorsed by Nautilus.

⭐️ What Else We're Reading

Thanks to science, the world now has mice with human brain cells. Cool? Yikes?

Researchers are scouting for “rock glaciers” to amp up accessible fresh water supplies.

Here’s who can get the first mRNA flu vaccines.

Are you one of those people for whom caffeine does pretty much nothing? One: Sorry. Two: This may be why.

Want to keep your brain healthy as you age? Consider picking up another language. (Or making a valiant attempt, anyway.)

Fresh Perspectives

❝

Contrary to popular belief, even in most countries where there are chronic food crises, there is usually enough food to eat, if only people could afford it.

—Journalist Jonathan M. Katz on why we may need to completely change how food aid works.

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