The prestigious biennial Kavli Prizes recognize scientists for major advances in three research areas: astrophysics, nanoscience and neuroscience—the big, the small and the complex. The 2014 winners, sharing a $1 million award in each field, will be announced live via satellite from the Norwegian Academy of Science and Letters in Oslo.

Synthetic blood mass-produced to meet supply shortages. Livers and kidneys “bioprinted” on demand. Missing fingers and toes re-grown with a jolt of bioelectricity. Regenerative medicine promises to do more than …

The mysteries of dark matter and dark energy may be evidence that we don’t fully understand the force of gravity. But when it comes to a force that has been studied mathematically and probed observationally for hundreds of years, what do we still need to learn?

After a storied career with 5 spaceflights (including three trips to fix the Hubble Space Telescope), NASA astronaut John Grunsfeld now helms the space agency’s scientific missions. He helps shepherd …

Dark energy is cosmology’s biggest mystery—an anti-gravitational force that confounds the conventional laws of physics. It makes up more than two-thirds of the cosmos, but science is still grappling to explain what dark energy actually is.

Time allows us to live in the moment, reflect on the past, plan for the future. It’s our most familiar, precious, yet mysterious commodity.

What’s it like to face a faceless world? Acclaimed neurologist Oliver Sacks once apologized for almost bumping into a large bearded man, only to realize he was speaking to a mirror.

We once shared the planet with Neanderthals and other human species. Some of our relatives may have had tools, language and culture. Why did we thrive while they perished?