Spiky filaments at the head of sperm cells may lash together, effectively allowing the swimming cells to harpoon an egg to facilitate fertilization. The new find could be a revelation in a fundamental process of life that is 14 years in the making.
Oysters serve as a major reservoir for noroviruses– the raw ones should be avoided, according to a new study. But seafood industry experts say the shellfish danger is overstated.
Diets rich in fish oil versus diets rich in lard produce very different bacteria in the guts of mice, reports a study. The researchers transferred these microbes into other mice to see how they affected health. The results suggest that gut bacteria share some of the responsibility for the beneficial effects of fish oil and the harmful effects of lard.
A study found that two popular medical dramas show cardiopulmonary resuscitation (CPR) successfully saving a “patient’s” life in nearly 70 percent of the scenes in which it was used. Half of the fictional patients who received CPR made enough of a recovery to eventually leave the hospital. That’s almost double the actual immediate survival rate of less than 37 percent and four times the real long-term survival rate of roughly 13 percent.
Among the many things that science is, it is a system of categorization. The human fossil record is rather poorly categorized, contends a professor, leading to a narrow view of what he believes to be a more complex and expansive evolutionary history than most anthropologists recognize.
Researchers have developed a procedure to mimic in laboratory experiments a form of brain trauma commonly seen in combat veterans, and findings suggest a new diagnostic tool for early detection and a potential treatment.
As a raindrop falls through the atmosphere, it can attract tens to hundreds of tiny aerosol particles to its surface before hitting the ground. Now, atmospheric chemists have determined just how effective rain is in cleaning the atmosphere. Given the altitude of a cloud, the size of its droplets and the diameter and concentration of aerosols, the team can predict the likelihood that a raindrop will sweep a particle out of the atmosphere.
Buzz Aldrin has gone where no man had gone before, he’s gotten a doctorate, he’s a universally loved American icon and a star of Twitter and TV. Now, at 85, he’s starting a new adventure– in Florida.
A new method of manufacturing glass could lead to the production of “designer glasses” with applications in advanced photonics, while also facilitating industrial scale carbon capture and storage. An international team of researchers has reported how they have managed to use a relatively new family of sponge-like porous materials to develop new hybrid glasses.
A large group of researchers set out to repeat 100 experiments published by leading psychology journals to see how often they would get the same results. The answer: less than half the time. But, that doesn't mean all those unconfirmed studies were wrong.
In 2011, neuroscientists reported that, in blind adults, brain regions normally dedicated to vision processing instead participate in language tasks such as speech and comprehension. Now, in a study of blind children, the same lab has found that this transformation occurs very early in life, before the age of four.
Isaac Newton was a classic neurotic. He was a brooder and a worrier, prone to dwelling on the scientific problems before him as well as his childhood sins. But Newton also had creative breakthroughs— thoughts on physics so profound that they are still part of a standard science education. Now, psychologists are presenting a new theory for why neurotic unhappiness and creativity go hand-in-hand.
The historic September 2013 storm that triggered widespread flooding across Colorado’s Front Range eroded the equivalent of hundreds, or even as much as 1,000 years’ worth of accumulated sediment from the foothills west of Boulder. This suggests that erosion may not always be a slow and steady process, but rather can occur in sudden, rapid bursts because of extreme weather events such as hundred- and thousand-year storms.
By thinking small, a group of South African scientists may have pioneered solar technology that has stumped Internet giant Google. The Helio100 project is a cost-effective heliostat that harnesses solar power to generate electricity.
Shortening the school week to four days has a positive impact on elementary school students' academic performance in mathematics, according to researchers. Their study analyzed the impact of a four-day school week on student achievement by comparing fourth-grade reading and fifth-grade math test scores for students who participated in a four-day school week, versus those who attended a traditional five-day school week.
Monkeys and humans exhibit greater motor recovery than rats after similar spinal cord injury. The reason for this lies in differences in anatomy and function of the corticospinal tract, which are the fibers through which the cortex communicates with the spinal cord.