Science & Technology
A mother’s age can shape her offspring without changing their DNA
Scientists have found evidence that the effects of a mother’s age on her offspring may be driven by reversible changes in gene activity rather than permanent DNA damage. The discovery raises the fascinating possibility that biological information from …
Coffee drinkers have less fat, more muscle, and surprising hormone differences
Coffee drinkers may be getting more than an energy boost. A Finnish study found that people who drank more coffee tended to have less total and abdominal fat, more muscle, and healthier metabolic markers despite having similar BMIs. Higher coffee intak…
Scientists turn probiotic bacteria into tiny drug factories for pancreatic cancer
Engineered probiotic bacteria were able to infiltrate pancreatic tumors, stimulate cancer-fighting immune cells, and slow tumor growth in animal studies. Even more strikingly, the treatment worked better when combined with chemotherapy, radiation, or i…
Tiny quantum engines reveal useful energy hiding in “waste heat”
A tiny machine made from just an atom and particles of light may sound impossibly simple, but it raises a surprisingly difficult question: what counts as heat, and what energy can still do useful work? University of Basel researchers have developed a t…
Pollen has a surprising problem — and honeybees have found a way around it
Honeybees can apparently detect when their food has the wrong balance of essential nutrients and adjust how much they eat to avoid potentially harmful excesses. They also transform pollen into remarkably well-balanced “baby food” for their larvae, reve…
This 23-foot crocodylian may have ruled South America’s food chain
Miocene South America was packed with giant prey—and the predators hunting them were just as spectacular. Fossil bite marks suggest crocodylians, especially the enormous Purussaurus neivensis, were more important predators than mammals in this ancient …
16 mummies and a dog reveal a hidden order inside an ancient Egyptian tomb
A tomb in Egypt’s Theban Necropolis reveals a surprisingly organized story of burial, reuse, and changing beliefs spanning hundreds of years. Researchers found 16 mummified people, the remains of at least four more, and a mummified dog, with burials ra…
Breast cancer is surging among Asian American women — and scientists don’t know why
Breast cancer is rising rapidly among Asian American women, with some of the most alarming increases occurring in younger women and in aggressive or advanced cancers. Researchers say screening alone can’t explain the surge, suggesting important risk fa…