Here's what researchers know for sure: going on a gluten-free diet if you have an intolerance, such as celiac disease, is beneficial. But what about the rest of us? Is going gluten-free healthier for everybody?

To better understand gluten, and how it impacts the human...

When we're scared, our eyes tend to widen. But why?

Scientists have long believed that the wide-eyed facial expression serves as a social signal, showing those around us that we feel threatened. Now research conducted at the University of Toronto suggests that the expression enlarges an individual's...

What would Manhattan's iconic skyline look like if NYC were suddenly beamed to another planet? Seven fantastical illustrations by Pittsburgh-based artist Nickolay Lamm suggest it would look, well, pretty different -- and not necessarily in the ways you might imagine.

The illustrations, put together with help from...

"Beauty" is how we appreciate the world. It’s what attracts us to each other, and quite frankly, scientists suggest it's biologically advantageous. But what exactly makes something -- or, better yet, someone -- attractive?

Cognitive researchers Dr. Kang Lee and Dr. Pam Pallett claim...

Will the athletes of the future be scientifically optimized superhumans? It's not as far out as you might think.

Surgery, blood augmentation, and genetic modifications are all possible ways to enhance the human body and take our natural abilities to new heights. But how exactly would such "body...

Doctors in Virginia made science history on Monday when they successfully completed a first-of-its-kind surgical procedure to separate six-month-old conjoined twin girls.

The 14-hour operation was performed at the Children’s Hospital of Richmond at VCU in Virginia, where the girls are now in stable condition.

First came the treadmill desk, allowing runners to work and work out at the same time. Though it seemed to be a multitasker's dream, one problem remained: reading while running.

"Not many people can run and read at the same time," Dr. Ji Soo...

Who invented the first telescope?

Some stargazers credit Galileo Galilei, who was the first astronomer to systematically study the cosmos with such a device. But historians of science say the credit should really go to Hans Lippershey, a Dutch eyeglass maker. He even attempted to...

Think your last dental check-up was bad? Pity poor Otzi. The mummified iceman had very severe tooth and gum trouble, according to a new study by researchers at the University of Zurich's Centre for Evolutionary Medicine.

Otzi, a well-preserved 5,300-year-old mummy, was discovered in 1991...

What would the Earth look like through a colossal pair of binoculars? Just watch NASA's newly released earth-from-space video above to find out.

The mesmerizing "bi-ocular" animation spotlights weather patterns over the Atlantic and Pacific Oceans during a 10-day period between March 19 and March 29. The...

Astronomers still don't know much about how the universe developed during its infancy, but tiny galaxies known as "Green Peas" may hold big clues.

What's so special about these rare green-glowing galaxies? A new study suggests they're emitting ionizing radiation, similar to how radiation is believed to have...

PETMAN has some scary new duds. In a just-released video, the eerily human-like military robot PETMAN rocks chemical protection clothing and a gas mask -- and he looks even more menacing than ever.

Built by robotics design company Boston Dynamics for the Department of Defense's Advanced...

How do geckos do it? How do the cute little lizards keep their footing when scurrying up and down wet, slippery tree trunks and leaves in their rainforest habitat?

Well, it's all about hairs -- not on the geckos' bodies but on the bottoms of their toes. These

It's no exaggeration to say the sun sustains life here on Earth -- it provides not only light and warmth but also the energy that helps keep us supplied with oxygen and food. But what if the sun exploded or suddenly went cold -- or simply blinked out of existence?

In a scene straight out of the 1958 horror flick "The Blob," a new YouTube clip shows a lump of magnetic silly putty completely engulfing a magnet.

The event, captured by YouTube user Scott Lawson, actually took an hour and a half, but luckily we're treated...

Widespread wildfires, a red sky, and upper atmospheric temperatures reaching 2,700 degrees? That was Earth around 66 million years ago following an ancient asteroid impact, a new paper suggests.

The paper's authors looked at the meteorological and geological consequences of the massive space rock strike that carved out...

Ever brought in something this good for show-and-tell? An unusual rock, which a 10-year-old student presented to his classmates, has turned out to be an incredibly rare, 320 million-year-old fossil of a horseshoe crab's footprints.

Bruno Debattista, who attends Windmill Primary School in Oxford, England, came...

What does it take for a high jumper to clear the bar? An incredible combination of speed, strength, and technique.

And what ties together those elements? Physics.

Just check out ESPN's "Sport Science" segment above with host John Brenkus and USA Track & Field Jesse...

NASA astronaut Don Pettit has seen it all -- from space. His innovative photography work aboard the International Space Station has ushered in a new era of space imagery, and some of his images have been compiled into a new time-lapse video.

Austrian photographer/videographer

The human eye certainly sees a lot, but it's not very good at detecting what researchers are calling the "invisible motion" all around us -- the way a baby's skin color shifts with each breath, for instance, or how a seemingly stationary crane is actually swaying wildly in...