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For astronauts in space, constipation is a well-known problem. But why this happens has long been unclear. Now, a new study from the University of Copenhagen in collaboration with NASA provides an idea of what happens in ...

Decades of climate change have not left Europe's mountain vegetation unscathed. However, the changes observed do not always match expectations. As a new international study by a research team led by researchers from the University ...

Basic biology courses teach that cells contain organelles—such as the nucleus, mitochondria and Golgi apparatus—set apart by lipid membranes to get things done. Recent cell biology research has revealed another organizational ...

A new pathway has opened for controlling the rotation direction of light simply by changing how molecules are arranged, without having to synthesize complex new materials. Circularly polarized light is a special form of light ...

Epithelial cells are the tiny shields that line and protect our bodies. In a developing embryo, epithelial cells grow, divide and move into positions to form the outer layers of our skin and the surfaces of our organs and ...

Over 4 million hectares (9.9 million acres) of protected tropical forest—an area double the size of Wales—have been lost to wildfires since 2001.

Before babies learn to speak, they're having actual conversations with their parents, whether the parents realize it or not. A coo. A babble. A squeal. Inevitably, an adult will make noises back or respond with baby talk: ...

Adjusting to a new time zone or work schedule can leave the body's internal clock out of sync for days, contributing to sleep disruption, metabolic changes and other health consequences. Researchers at Rice University and ...

Recovering valuable metals from electronic waste, mining streams and industrial waste typically requires large quantities of chemical reagents. Researchers at the University of Illinois Urbana-Champaign have developed a new ...

A new pilot study reports that direct-current (DC) microcurrent stimulation was associated with a statistically significant reduction in measured postsurgical scar depth immediately following a single treatment. The article, ...

A "centaur" is a human helped by a machine: The person sets the direction, the machine supplies the horsepower, and together they are better than either one alone.

From launchpads to low Earth orbit and beyond, space companies and their affiliates are deploying a familiar marketing tactic—with a new twist. In a space economy projected to reach US$1.8 trillion by 2035, they sell space ...