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Light, sleep and the science behind night lenses, in plain words.
Oct 26, 2026 · 2 min read
How NASA rethought light on the Space Station, and what it means for your bedroom
Astronauts see about 16 sunrises a day. To help them sleep, NASA replaced the station’s lights with LEDs that change colour through the day. Your home...
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Oct 26, 2026 · 1 min read
The two-hour rule: what evening light does to your melatonin
Your melatonin starts rising about two hours before you fall asleep. That is exactly when most of us are lit up by phones, TVs and ceiling...
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Oct 26, 2026 · 2 min read
Why clear blue-light glasses don’t help you sleep
Most “blue light” glasses are clear, and clear lenses stop short of the colour your body clock actually reads. Here is what the research says, and...
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