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Scientists have uncovered the unconventional way that the cholera bacterium stabs and kills other bacteria to steal their DNA, making it potentially more virulent. Cholera is caused when the bacterium Vibrio cholerae infects the small intestine. The disease is characterized by acute watery diarrhea resulting in severe dehydration.
Growing up in rural Iowa, roadkill was basically a fact of life. Skunks were the most dreaded, for obvious reasons, but cars mowed down raccoons, squirrels, pets, and — sometimes fatally for drivers and passengers — deer. Roads often pass through ecosystems where a lot of animals make their homes. Which is why, when Montana's department of transportation wanted to build a new road, they built a land bridge for wildlife.
If all goes according to plan, cement and concrete maker Lafarge will continue turning a limestone hill in Malaysia into a quarry. It would be business as usual for Lafarge, but bad news for Charopa lafargei, a recently discovered snail that lives only on that hill. The gastropod's name is no coincidence. For the first time, taxonomists have named a species after the entity that could cause the creature's extinction.
Gazing at images of the great outdoors has been linked with a range of benefits, including pain relief, stress recovery and mood improvement. Now a study published in May 2014 in PLOS ONE adds impulse control to that list. Researchers at Utah State University asked three groups of participants to complete a task that tests whether they could resist instant gratification for a better reward later on.
Men who find themselves in the company of fertile women are more likely to make creative attempts at sentence structure to signify their mating fitness, a study has found.
The Iliad and The Odyssey are two of the key works of Western civilization. But almost nothing is known about their author and the date and manner of their creation. In Why Homer Matters, historian and award-winning author Adam Nicolson suggests that Homer be thought of not as a person but as a tradition and that the works attributed to him go back a thousand years earlier than generally believed.
Czech archaeologists have unearthed the tomb of a previously unknown queen believed to have been the wife of Pharaoh Neferefre who ruled 4,500 years ago, officials in Egypt said Sunday.
Alt: Archaeologists discover tomb of previously unknown queen in Egypt
Dozens of foreign missions carried out over three decades using the latest high-tech instruments failed to find the causeway of the Great Pyramid of Giza. Now, unexpectedly, the passage has finally been located by a local resident living near the Giza Plateau, who was illegally digging beneath his home when he discovered a tunnel leading to the Pyramid of Khufu, the largest of the three pyramids in Giza.
Pet dogs are known to improve the social skills of children with autism, but new research suggests that any pet may offer the same benefits.
A few years ago I tracked over 3,000 people attempting to achieve a range of new year’s resolutions, including losing weight, exercising more, stopping smoking and drinking less. At the start of the study, 52% of participants were confident of success. One year later, only 12% had actually achieved their goal.
Regular mental imagery exercises help preserve arm strength during 4 weeks of immobilization, researchers have found. Strength is controlled by a number of factors -- the most studied by far is skeletal muscle. However, the nervous system is also an important, though not fully understood, determinant of strength and weakness. In this study, researchers set out to test how the brain's cortex plays into strength development.
A MERTK gene defect responsible for a recently identified form of progressive retinal atrophy in Swedish vallhund dogs has been found by an international team of scientists. This discovery opens the door to the development of therapies for diseases that cause blindness both in dogs and humans.
The stunning diversity of snowflakes gives rise to the idea that every single one is unique. While "no two flakes alike" might be an attractive metaphor, it isn’t entirely true. Yet that doesn’t stop us from peering at the intricate crystal structures caught on our mittens. It also doesn’t stop researchers from painstakingly cataloguing each and every type of crystal that might form.
Rocks are pretty tough, but eventually, even the mightiest mountains crumble. Geologists usually give the credit to water and ice. But when it comes to smashing summits, a major player may be electricity—in the form of lightning. Scientists have found evidence for lightning’s role in mangling mountains in the magnetic signatures of rocks, which go haywire when blasted by bolts.
Dark energy is an unknown form of energy that is proposed to drive the accelerated expansion of the universe. A new study by University of Georgia professor Edward Kipreos suggests that changes in how people think about time dilation—the slowing of time predicted by Albert Einstein—can provide an alternate explanation of dark energy.
How habitable was Mars in the past? Since NASA's Curiosity rover touched down on Mars in August 2012, it has helped answer a few of these questions in the area surrounding its equatorial landing site of Gale Crater.
A mystery object at the center of the galaxy has astronomers scratching their heads, and a new piece of information won't be solving the case before the New Year.
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