Why large dogs age faster than small ones, and other October research highlights

Arizona State University scientists have found that larger dogs age faster than smaller ones due to the decrease in DNA methylation, particularly in regions with 'jumping genes' called LINE1s. This decrease leads to increased activity in these genes, causing cancer and other age-related diseases. The study used data from 864 dogs in the Dog Aging Project to map patterns of DNA methylation across the genome. The findings suggest that the regulation of DNA methylation is crucial in determining the lifespan of dogs. Giant dog breeds lost roughly 35% more LINE1 methylation than smaller breeds, which may contribute to their shorter lifespan. Invisible tattoo inks that only show up under UV light have also been developed. Physicists at CERN have successfully trapped a single particle of antimatter for months. A medieval skeleton was identified as a Viking warrior using DNA analysis. A new technique has been developed to trap a single particle of antimatter for months.