Guest Thinkers — December 21, 2010

Fix It

The most surprising and impactful new stories delivered to your inbox every week, for free.

This may have come, oh I don’t know, about 15 years too late.

The most surprising and impactful new stories delivered to your inbox every week, for free.

Bright star at the center of a blue nebula radiates mass energy, surrounded by numerous smaller stars, with diffraction spikes visible from the brightest stars.

Ask Ethan: When do stars turn the most mass into energy?

All stars shine due to an internal source of energy. Usually, it’s nuclear fusion: converting mass into energy. What makes them most bright?

A vintage-style illustration of a celestial scene, echoing science fiction by scientists, features a textured black planet and a whimsical moon with an eye, all enclosed in a pale green border against a starry background.

Books

5 classic science fiction novels written by scientists

What happens when scientists “write what they know”? Some amazing science fiction stories.

Black and white photo of a young woman resting her chin on her hand, set against a green background with circular and brain patterns.

Thinking

Why Hannah Arendt left philosophy behind to face the world

Arendt thought 20th-century philosophy had become too passive and abstract. She called for “active thinking” that prepares us to live in the real world.

A collage with “The Nightcrawler” text, a grayscale photo of a tractor in a field, and a blue-tinted portrait of a man in a suit, layered on blue backgrounds with chart graphics that hint at long-term investing trends.

Business

The inner game of long-term investing

Welcome to The Nightcrawler — a weekly newsletter from Eric Markowitz covering tech, innovation, and long-term thinking.

Starts With A Bang

Why 21 cm is our Universe’s “magic length”

Photons come in every wavelength you can imagine. But one particular quantum transition makes light at precisely 21 cm, and it’s magical.

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