A clock constructed of rDNA methylation sites can estimate both chronological and biological age across species.

When implanted into mice, the “pseudo-islets” helped treat the animals’ diabetes symptoms.

Human lung cancer cells can form an invasive pack that coordinates its movement during metastasis.  

The agency sends warning letters to makers of products that claim to prevent or treat Alzheimer’s and other diseases, and announces changes to its enforcement practices.

If the structures identified in a 2.1-billion-year-old rock are really signs of burrowing organisms, it would push back the earliest known mobile organisms by 1.5 billion years.

New studies suggest forebears’ age and physical proximity matter when it comes to their grandkids’ survival.

The outbreak has infected 50,000 people and killed 300, most of them children, since cases began to crop up in October 2018.

Sea fireflies spew a mucus with a chemical glow to lure mates and avoid being eaten.

Donald Trump announced a plan to drastically cut HIV transmission by 2030, but some scientists and nonprofits aren’t sure the administration will follow through.