Astronomers have solved a 21-year-old cosmic mystery with the discovery of a star whose companion exploded, confirming that the surviving star was partly responsible for the resulting supernova. A team of 12 scientists, including the University of Chicago’s Vikram Dwarkadas, recently published the discovery in the Astrophysical Journal. (more…)
Finding may lead to new target for treatment
In the past decade, scientists have identified a handful of genes connected with Parkinson’s disease. Now, a team of UCLA researchers has identified another gene involved in the neurological disorder. Their finding may provide a target for drugs that could one day prevent or even cure the debilitating illness. (more…)
ANN ARBOR — Underwater archaeologists have discovered evidence of prehistoric caribou hunts that provide unprecedented insight into the social and seasonal organization of early peoples in the Great Lakes region.
An article detailing the discovery of a 9,000-year-old caribou hunting drive lane under Lake Huron appears in today’s issue of the Proceedings of the National Academy of Sciences. (more…)
Researchers have found that central-east Mexico gave birth to the domesticated chili pepper, which is now the world’s most widely grown spice crop.
In the Southwest, the chili pepper is practically a dietary staple. It gives salsa a spicy crunch, it brings depth to Mexican sauces, and it provides an extra kick to Sonoran hot dogs.
Plenty of other world cuisines rely on it too, from China to India to Thailand. But Latin America, researchers have confirmed, is where it started. (more…)
Researchers at JILA have for the first time used an atomic clock as a quantum simulator, mimicking the behavior of a different, more complex quantum system.
Atomic clocks now join a growing list of physical systems that can be used for modeling and perhaps eventually explaining the quantum mechanical behavior of exotic materials such as high-temperature superconductors, which conduct electricity without resistance. All but the smallest, most trivial quantum systems are too complicated to simulate on classical computers, hence the interest in quantum simulators. Sharing some of the features of experimental quantum computers—a hot research topic—quantum simulators are “special purpose” devices designed to provide insight into specific challenging problems. (more…)
Chondrules may have formed from high-pressure collisions in early solar system
At issue is how numerous small, glassy spherules had become embedded within specimens of the largest class of meteorites—the chondrites. British mineralogist Henry Sorby first described these spherules, called chondrules, in 1877. Sorby suggested that they might be “droplets of fiery rain” which somehow condensed out of the cloud of gas and dust that formed the solar system 4.5 billion years ago. (more…)
