An entirely new population replaced ancient Britons approximately 4,500 years ago, a DNA study in Nature suggests. Researchers tested DNA from 400 ancient remains and found that Beaker people took over all but 10% of the gene pool in Britain over just a few hundred years, making ancient Britons responsible for only a small portion of modern Britons' lineage.
New fossil finds are raising questions about long-held beliefs on what attributes constitute a dinosaur. As older remains are found, the number of features that determine whether a creature was a dinosaur has dropped, and only one remains: a hip-socket hole, according to a number of recent studies.
A strange spiral nanostructure found on the tail end of human sperm may help propel it toward an egg for fertilization. "We believe that this spiral may act as a cork inside the microtubules, preventing them from growing and shrinking as they would normally do, and instead allowing the sperm's energy to be fully focused on swimming quickly towards the egg," said Davide Zabeo, lead researcher on the study published in Scientific Reports.
Babies whose mothers received flu and whooping cough vaccines while pregnant showed no higher risk of mortality or hospitalization than children whose mothers did not receive vaccines, a study published in Pediatrics suggests. Researchers combed through the medical records of 413,000 babies from various health care systems to reach their findings.
Researchers have created a molecular clock using only DNA. The prototype DNA oscillator was made using a DNA compiler that allowed scientists to mix synthesized sequences together into strands that assemble themselves into molecular devices.
A team of researchers working to develop a new treatment for severe pain has won a translational research grant from New Zealand's University of Otago. The roughly $55,000 grant will go toward the development of a new pain medication that will make pain control more manageable while causing fewer side effects.
South Korean researchers found that contrast-enhanced brain MRI with radial volumetric interpolated breath-hold examination sequence produced higher-quality images and reduced motion-related artifacts in children who couldn't restrict movement during imaging, compared with MRI with the conventional magnetization-prepared rapid acquisition gradient echo sequence. However, the findings in the American Journal of Roentgenology showed the MP-RAGE approach yielded better results among those who remained still during imaging.
Cryptocurrency moguls are investing heavily in researching ways to extend human longevity. Among the recent donations is a gift of $2.4 million in the digital currency ether from Vitalik Buterin, the founder of Ethereum, to SENS Research, which is studying ways to treat the diseases of aging as well as methods of rejuvenation.
A Pennsylvania elementary school's students are learning science, technology, engineering and math concepts by engaging in problem-solving activities. As part of the Engineering is Elementary program for an early introduction of STEM, kindergartners have been making Rube Goldberg machines to learn about force, friction and gravity.
The number of students taking Advanced Placement tests and scoring a three or higher has increased about 70% over the past decade, according to The College Board. Data from 2017 show Massachusetts leading the pack in test access and performance.