As a chameleon shifts its color from turquoise to pink to orange to green, nature's design principles are at play. Complex nano-mechanics are quietly and effortlessly working to camouflage the lizard's skin to match its environment.
Inspired by nature, a Northwestern University team has developed a novel nanolaser that changes colors using the same mechanism as chameleons. The work could open the door for advances in flexible optical displays in smartphones and televisions, wearable photonic devices and ultra-sensitive sensors that measure strain.
For the millions of Americans who work "nonstandard" shifts - evenings, nights or with rotating days off - the schedule can be especially challenging with children at home.
But a new study from the University of Washington finds that consistent hours, at whatever time of day, can give families flexibility and in some cases, improve children's behavior.
According to the United Nations, 2.1 billion people lack access to safely managed drinking water services, the majority of whom live in developing nations.
Boston, MA - Current experimental approaches in Medicaid programs--including requirements to pay premiums, contribute to health savings accounts, or to work--may lead to unintended consequences for patient coverage and access, such as confusing beneficiaries or dissuading some people from enrolling, according to a new study from Harvard T.H. Chan School of Public Health.
The study will be published online June 20, 2018 in Health Affairs.
DES PLAINES, IL--Most emergency department patients want to be involved in some aspects of medical decision-making, but they need to be invited. These are the primary findings of a study to be published in the July 2018 issue of Academic Emergency Medicine (AEM), a journal of the Society for Academic Emergency Medicine (SAEM).
Deep inside the Earth exist pockets of water, but the liquid there isn't like the water on the surface.
When exposed to unimaginably high temperatures and pressures, water exhibits all sorts of weird phases and properties, from remaining a liquid at temperatures 10 times higher than the boiling point to existing as a liquid and a solid at the same time.
Abandoned mines can serve as roost sites for bats, but because the mines pose serious risks to humans, officials often install gates at their entrances. With more than 80,000 abandoned mines in the southwestern United States, these subterranean habitats are important to bat survival as human disturbances from recreation and other activities at natural caves are affecting their use by bats.
It seems reasonable that people would want to maximize various aspects of life if they were given the opportunity to do so, whether it's the pleasure they feel, how intelligent they are, or how much personal freedom they have. In actuality, people around the world seem to aspire for more moderate levels of these and other traits, according to findings published in Psychological Science, a journal of the Association for Psychological Science.
A heat wave sweeps through a city and people swelter, running indoors to find air conditioning. But crops out in a field aren't so lucky. For them, there is no escape.
Scientists in Australia are working to understand how heat waves impact wheat. They are mixing observational studies with techniques from computer science. This will allow them to create models to understand how wheat will respond in certain conditions.
The percentage of multiracial congregations in the United States has nearly doubled, with about one in five American congregants attending a place of worship that is racially mixed, according to a Baylor University study.
While Catholic churches remain more likely to be multiracial -- about one in four -- a growing number of Protestant churches are multiracial, the study found. The percentage of Protestant churches that are multiracial tripled, from 4 percent in 1998 to 12 percent in 2012, the most recent year for which data are available.