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Phys.org / Early farmers' larger grains may reflect rainfall, not genetic selection

A new archaeobotanical study by researchers from the University of Oxford and Kiel University (CAU) has revealed that increases in cereal grain size at the dawn of agriculture, more than 11,000 years ago, were initially driven ...

9 hours ago
Phys.org / Scientists uncover a hidden mechanism that drives RNA synthesis

Scientists have long been fascinated by two promising classes of antibiotics that disable RNA polymerase (RNAP). They knew that these drugs could grind gene expression to a halt in several pathogens, including the bacterium ...

10 hours ago
Tech Xplore / Three holographic layers steer red, green and blue light for brighter AR displays

Researchers have developed a full-color near-eye display that uses three stacked holographic gratings, each engineered to direct red, green or blue light. The new design could help advance compact, energy-efficient augmented ...

8 hours ago
Phys.org / Twisted magnetic field around newborn star confirms decades-old jet theory

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA), of which the U.S. National Science Foundation National Radio Astronomy Observatory (NSF NRAO) is a partner, have captured the first direct, high-resolution ...

11 hours ago
Phys.org / Webb reveals oxygen-rich dust and water surviving near Milky Way's central black hole

Using the NASA/ESA/CSA James Webb Space Telescope, an international team of astronomers has discovered that dust and water can form and survive surprisingly close to the supermassive black hole at the center of the Milky ...

11 hours ago
Phys.org / Can better civics education restore voter dissatisfaction over political corruption?

This summer, America celebrated the 250th anniversary of the signing of the Declaration of Independence, widely recognized as the formal founding of our nation and one of the early stages of establishing a democratic government.

5 hours ago
Phys.org / Today's Mediterranean diet leans on olive oil, veggies and fish—But the ancients mainly ate bread

The Roman emperor Julian (332–363 CE) called bread the food that "among us is thought to be the most nourishing."

3 hours ago
Phys.org / Egyptian blue in Iron Age Iran points to ancient connections

Egyptian blue, considered the world's earliest synthetic pigment, was prized for its stable blue hues and served as a common blue paint in Egypt as early as 5,000 years ago, as well as the base material for small items such ...

12 hours ago
Phys.org / DNA origami nanosyringe actively transports molecules into synthetic cells

Transporting molecules across biological membranes is essential for life. In nature, this can occur through passive transport, known as diffusion. "Biological systems often use mechanical motion to accomplish tasks that cannot ...

10 hours ago
Medical Xpress / Protein secreted by immune cells may help drive brain aging

Brain-resident immune cells that have reached an old-age state called "senescence" secrete a protein that causes dysfunction in other brain cells, according to a study led by investigators at Weill Cornell Medicine. The discovery ...

11 hours ago
Phys.org / AI-assisted grant proposals may win more often—while narrowing research ideas

A new study from Northwestern's Kellogg School of Management found that research proposals showing stronger signs of AI-assisted writing were four percentage points more likely to receive funding from the National Institutes ...

5 hours ago
Medical Xpress / Detection of optic nerve inflammation enables earlier multiple sclerosis diagnoses

Multiple sclerosis (MS) is the most common chronic autoimmune disease of the central nervous system. An early and accurate diagnosis is crucial for improving the effectiveness of treatment and reducing nerve damage. To standardize ...

11 hours ago