Nighttime light exposure may worsen sleep in people with schizophrenia, according to a study of 225 outpatients. Researchers at Fujita Health University found that higher nighttime illuminance was linked to lower sleep efficiency and total sleep time, as well as longer time to fall asleep and more nighttime wakefulness. The associations were detected using objective sleep measurements, while patients’ self-reported sleep quality showed no significant relationship with nighttime light exposure during sleep. 

New research reveals how Syrian archaeologists defied the perils of civil war to save the invaluable collections of one of Syria’s most treasured museums.

Chimpanzees show the widest variety of tool-use strategies of any non-human animal. This enables them to crack nuts, capture termites and ants, and even transfer tools between individuals to obtain food in their natural habitat. But how do wild chimpanzees acquire and pass on these tool-use skills? A study published in Frontiers in Psychology reveals how wild chimpanzees learn to use tools (wooden sticks, stone anvils, etc.) in the savannah.

GBD 2021 data were used to assess trends, SDI-related distributions and DALY drivers from 1990 to 2021. Cardiovascular diseases had the highest mortality and DALY rates in 2021. Communicable, maternal, neonatal and nutritional (CMNN) burdens remained concentrated towards lower-SDI settings but gradients weakened, whereas NCD burdens remained concentrated towards higher-SDI settings and gradients strengthened. Population growth and ageing mainly drove the 577 million rise in NCD-related DALYs.