By blocking the action of a single protein, scientists have extended the average life span of the mice in their experiment by around 25%. This recent finding has raised the question of whether such a treatment could ever work for people, and so far, there are some promising early hints that it might. In the … Read more
For the first time, scientists have tested a messenger RNA (mRNA) vaccine in a patient with a deadly form of brain cancer — and it triggered a strong immune response. The vaccine, which was described in a study published on May 1 in the journal Cell, was created by extracting genetic material called RNA from … Read more
For the first time, scientists have generated functional human brain tissue using a 3D printer. Scientists printed the tissue to be less than 0.01 inch (0.02 centimeter) thick, and it contains both nerve cells and supporting cells called glia. All of these cells can communicate with one another and form networks, as they would in … Read more
Why do common shrews live for only two years, while bowhead whales survive for two centuries? And could the answer give us hints as to how to extend our own, human life spans? The maximum life span of each species is estimated using the age of its longest-living member, and these vary by orders of … Read more
Look up at the sky and clouds may look like “feather canyons” and “ice cream castles in the air,” as they did to Joni Mitchell. But why do they look as if they’re suspended in mid-air, and are they actually floating? And if so, what keeps them aloft? “It’s sort of an illusion,” Alex Lamers, … Read more
In science fiction films, nothing raises tension quite like the good guys’ spaceship getting caught in an invisible tractor beam that allows the baddies to slowly reel them in. But what was once only a sci-fi staple could soon become a reality. Scientists are developing a real-life tractor beam, dubbed an electrostatic tractor. This tractor … Read more
Two children who experienced intense, insatiable hunger that drove them to overeat have rare, never-before-seen genetic mutations that interfere with leptin, a key hormone that helps tell the body when it is full, a new case report says. After white fat cells make leptin, it plugs into the brainstem and hypothalamus, brain regions that help … Read more
What would Bill Nye the Science Guy get our home planet for Earth Day? The ultimate gift: fusion energy. “We need electricity,” Nye told Live Science in an exclusive interview on Thursday (April 20). “We need not only what we can get right now with existing technologies — with wind, and solar and geothermal energy … Read more
Our “biological age,” which reflects signs of age-related decline in our cells and tissues, doesn’t steadily increase along with our chronological age. Instead, new research suggests that biological aging can accelerate during stressful events and then reverse after those events. In other words, there are measurable biological markers linked to age-related changes in cell function, … Read more
The spread of drug-resistant “superbugs” — including bacteria that have evolved to thwart even the most potent antibiotics — represents an ever-growing threat to public health. Now, scientists have invented a new type of antibiotic that can take down these germs by rapidly rearranging its atoms and thus changing its shape. The researchers described the … Read more
