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Pink noise reduces REM sleep and may harm sleep quality

A new study found that pink noise can reduce restorative REM sleep and interfere with sleep recovery, while earplugs were more effective in protecting sleep against traffic noise. The findings challenge the widespread use of ambient sound machines and apps marketed as sleep aids.

SourceUniversity of Pennsylvania School of Medicine·JournalSLEEP·DateFeb 2, 2026
Apple iPhone 17 Pro

Apple iPhone 17 Pro delivers top performance and advanced cameras for field documentation, data collection, and secure research communications.

Transforming acoustic waves with a chip

Researchers have developed a new acoustic wave-producing technology on an electronic chip, enabling customizable curved waves for trapping objects, routing wave information, and transporting fluids. This innovation has significant potential in medical applications, such as noninvasive surgery and biosensors.

SourceVirginia Tech·JournalNature Communications·DateDec 8, 2025