Microbes in the gut can help the immune system fight cancer, and a fiber-rich diet may be the key to unlocking those benefits, a study in mice suggests. The immune system is a key player in the body’s battle against cancer. On the front line of this resistance are CD8+ killer T cells, a type … Read more
Scientists may be closer to understanding why time seems to pass more quickly as we age — and brain scans of people watching an old Alfred Hitchcock show helped them address this enduring question. In a study published Sept. 30 in the journal Communications Biology, scientists pulled data from the Cambridge Centre for Ageing and … Read more
Most of the time, death is permanent — when someone’s heart stops beating, it rarely starts again. But sometimes, first responders can help bring a person back from the dead even after their heart stops. So what’s the longest time that someone has been clinically dead and come back to life? Generally, spending more than … Read more
Scientists have been using ancient DNA to investigate questions about extinct animals since 1984, when researchers recovered two pieces of DNA from a museum specimen of a quagga, a zebra-like species that went extinct in the 19th century. Over the past 40 years, advancements in technology have allowed scientists to sequence older and older DNA … Read more
Red onion dye could be the missing ingredient required to bolster ultraviolet (UV) protection for solar cells, scientists say. Solar cells are typically coated with a petroleum-based film to protect them from UV-induced degradation. These films include oil-based materials such as polyvinyl fluoride (PVF) and polyethylene terephthalate (PET). In the quest to drive the adoption … Read more
Scientists have created the first artificial tongue that can sense and identify flavors entirely in liquid environments — mimicking how human taste buds work. The achievement, described July 15 in the journal PNAS, could lead to automated systems for food safety and early detection of diseases via chemical analysis, the researchers say. The technology could … Read more
Both Salvador Dalí and Thomas Edison are said to have used dreams to stoke their creative process. To spark new ideas, the men would let themselves drift off to sleep for just a few moments, and then wake up and note the dreamlike visions they had on the brink of unconsciousness. But you may have … Read more
Hibernating mammals rely on particular genes to adjust their metabolisms as they enter that unique, low-energy state — and humans actually carry that same hibernation-related DNA. Now, early research hints that leveraging this particular DNA could help treat medical conditions in people, scientists say. Hibernation offers “a whole bunch of different biometrically important superpowers,” senior … Read more
A universal cancer vaccine in development could help rev up the immune system against tumors and supercharge the effects of existing cancer therapies, an animal study suggests. Similar to vaccines for viral infections like the flu, many cancer vaccines are designed to help the immune system recognize specific proteins. However, while conventional vaccines aim to … Read more
Half-forgotten memories can be resurrected using “mental time travel,” a new study suggests. The research, published Monday (July 28) in the journal PNAS, showed that a person can rejuvenate their fading memories by recalling the emotions and thoughts they had when they first stored that memory. In fact, the researchers found that the refurbished memories … Read more
