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Scientists have made the first real-space images of exciton-polaritons, which are a combination of light and matter. The nano-image, explains Zhe Fei, shows the waves associated with one of these quasiparticles moving inside a semiconductor. “These are waves just like water...
Researchers have found that prehistoric dogs from Germany may have been genetic ancestors to modern European dogs. The finding suggests a single domestication event of modern dogs from a population of gray wolves that occurred between 20,000 and 40,000 years...
The twin telescopes of the Gemini observatory, each with a diameter of 8.1m, are placed in both hemispheres, Gemini South in Chile and Gemini North in Hawaii and have privileged access to the skies. In 2014, Gemini issued a...
Scientists have discovered that the desert’s biocrust plays a previously unknown role in regulating the arid climate. This “living skin of the desert” goes by different names. You may have seen signs in parks and protected areas advising you not...
Astronomers have captured multiple images of a Type Ia supernova—the brilliant explosion of a star—appearing in four different locations in the sky. So far this is the only Type Ia discovered that has exhibited this effect. The help of an...
Just as in humans, conscientiousness in animals—which includes working hard, paying attention to detail, and striving to do the right thing—offers evolutionary benefits like giving them an edge in hunting and gathering, attracting mates, procreating, and fending off predators. Scientists...
Some actions, like yawning and scratching, can spread from one person to another. New research finds that socially contagious itching is hardwired in the brain. Studying mice, the scientists have identified what occurs in the brain when a mouse feels...
Mastodon bones recovered from a site in San Diego appear to dramatically revise the timeline for when humans first reached North America. The bones, tusks, and molars are about 130,000 years old. They were sharply broken and found deeply buried...
An ever-changing climate can put certain regions in the crosshairs of coastal flooding, heavy rain, erosion, and other risks. Now scientists have charted landscapes to clarify when and how to implement “managed retreat,” the relocation or abandonment of development in...
A giant, spinning, doughnut-shaped mass of molten or vaporized rock—called a “synestia”—may form as planet-sized objects smash into each other in space, scientists propose in a new paper. And at one point early in its history, the Earth itself was...