When these energy-giving organelles thrive, so do we

Mounting evidence from genome studies indicates that, contrary to received wisdom, our species has undergone profound biological adaptation in its recent evolutionary past

Vitamin D supplements may help prevent the loss of telomeres, DNA sequences that shrink with aging, a large study shows. But the health effects aren’t yet clear

The geroscience hypothesis holds that targeting molecular pathways that drive aging can give us more healthy years. Evidence is mounting. Learn more.

A new generation of telescopes could peer back to the earliest epochs of the universe

A coalition of autism scientists has formed to counter RFK, Jr.’s misrepresentations of science and of autism spectrum disorder

Researchers are trying to rebuild sea ice above the Arctic Circle so it can reflect the sun’s warming rays, slowing climate change

What we know about Joe Biden’s cancer, prognosis and treatment options

A workout boosts the fitness of your gut microbiome. This creates molecules that aids your immune system, metabolism, and more

A NOAA official says that “everything has ground to a halt” at the agency as staffers have waited for Secretary of Commerce Howard Lutnick to review more than 200 agreements

A freak particle physics process could wipe out all galaxies and life—but it’s wildly unlikely

A quantum computer has used a single atom to model the complex dynamics of organic molecules interacting with light

Several devastating tornado outbreaks have cut swaths of destruction across the U.S. What’s driving these damaging storms?