Exposure to higher levels of light can help people feel more awake and increase cognitive performance, probably by influencing the activity of parts of a brain region called the hypothalamus, ...

Artificial nighttime lights have important behavioral and ecological effects on wildlife. Combining laboratory and field techniques, we identified behaviorally relevant levels of nighttime light and ...

Blue light has acquired a dubious reputation in recent years, frequently blamed for everything from disrupted sleep patterns to digital eye strain. This high-energy light, emitted abundantly by our ...

Long-term exposure to nonstandard work schedules can result in circadian misalignment, which has been linked to a series of maladies. To test whether modulating light patterns reduces ...

New research from the University of Waikato nails down how much light travels from the outside world to babies in the womb, with far-reaching implications for understanding human development. Research ...

There are many situations in which scientists and engineers need to detect very low levels of light (less than around 1000 photons per second). Spectroscopy, for example, is a valuable tool for many ...