Articles
Ten long reads from the Horizon tab: sunlight, skin, the eye, the Sun itself, and the industry being built under it.
Elevation
Why the higher ground sees a different sky…
The Vitamin D Gradient
How Skin Pigmentation, Immune Dysregulation, and Under-Treatment Shape the Uneven Costs of Childhood Asthma and Autoimmunity…
The Season in the Blood
How Vitamin D, Daylight, and the Medicines Written First Shape Depression and Anxiety in Children and Adults…
The Photon That Remembers You
How one ultraviolet event becomes hormone, clock, mood, pressure, bone, and immunity.…
The Sun
Our 500-nanometer star is just 93 million miles away: Orbital Harvest, Lunar Industry, and the Physics of an Inverted Atmosphere…
Light through the body
The body is translucent to 850 nm. The eyes are not required for the effect.…
Heliotherapy
Sunlight as medicine for skin, bone, blood, and the clock — from ancient air and light to vitamin D, immunity, and the lamp that replaced a courtyard.…
The Factory in the Sky
A photosphere, a polar crater, and a catapult…
UV index and sunlight’s interaction with the skin, the eyes, and the brain. Why it matters.
The UV index is a sunburn meter, not a mood. The World Health Organization sets it at 40 times the sunlight left after the McKinlay–Diffey erythema curve. Index 1 is 25 m…
Index 8, Reported Lower
Sunglasses tell the brain the ultraviolet is less than the sky. Skin protection is issued for the lower report.…
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