Published by the Students of Johns Hopkins since 1896
March 2, 2026
March 2, 2026 | Published by the Students of Johns Hopkins since 1896

Science & Technology












 VENTURIST/CC-BY-2.0
The circadian rhythm, which regulates sleep cycles, is more complicated than was thought.

Retina has its own circadian rhythm

The suprachiasmatic nucleus (SCN), a wing-shaped structure in the hypothalamus, operates as the body’s internal clock, synchronizing circadian rhythms of separate tissues to generate an approximately 24-hour circadian cycle for the entire body.











News-Letter Magazine