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Does drinking chamomile tea actually make people sleepy?

Seafood lovers who prize the mussel for its earthy taste and succulent flesh may be unaware of its growing potential in the fight against water pollution.

Iceland on Sunday honours the passing of Okjokull, its first glacier lost to climate change, as scientists warn that some 400 others on the subarctic island risk the same fate.

A Nasa facility in Alabama will play a key role in sending astronauts to the Moon's surface in 2024.

A sparking mystery

Fighting the good fight.

Here's why non-smokers are getting sick.

Some countries are seeking extra protection while others want to re-open ivory markets at key trade meeting in Geneva.

And now he's making t-shirts?

They're not just stealing data anymore.

We've done the math.

Stone tools uncovered in Mongolia by an international team of archaeologists indicate that modern humans traveled across the Eurasian steppe about 45,000 years ago, according to a new University of California, Davis, study. The date is about 10,000 years earlier than archaeologists previously believed.

In the battle of the sexes, males appear to have the innovative edge—from a genetic standpoint, at least. Scientists are finding that the testes are more than mere factories for sperm; these organs also serve as hotspots for the emergence of new genes, the raw material for the evolution of species.

Nanometers are one billionth of a meter, a metric typically used to measure molecules and scientific building blocks not visible to the human eye. Materials of tens and/or several hundred nanometers in diameter have unique properties, and thus have been widely used in diagnosing and treating various human diseases. One major challenge to use these nano-sized materials is how to deliver them into cells and reach their sites of action.

One of the greatest mysteries in condensed matter physics is the exact relationship between charge order and superconductivity in cuprate superconductors. In superconductors, electrons move freely through the material—there is zero resistance when it's cooled below its critical temperature. However, the cuprates simultaneously exhibit superconductivity and charge order in patterns of alternating stripes. This is paradoxical in that charge order describes areas of confined electrons. How can superconductivity and charge order coexist?

President Donald Trump has expressed an interest in buying Greenland, an autonomous Danish territory.

"This is potentially the silicon of the quantum information age."

A woman's daily habit of cleaning her ears with cotton swabs led to a life-threatening infection in her skull.

Excess heat given off by smartphones, laptops and other electronic devices can be annoying, but beyond that it contributes to malfunctions and, in extreme cases, can even cause lithium batteries to explode.

A toothless skull was all that researchers had of one of Scotland's oldest known Druids, but now they have something more: a wax re-creation of her face.

Astronomers have been watching the black hole at the center of our galaxy for 20 years, and in May, they saw something they'd never seen before.

At first glance, it looks like hard candy laced with flecks of fake fruit, or a third grader's art project confected from recycled debris.

Machine learning algorithms can sometimes do a better job with a little help from human expertise, at least in the field of materials science.

The race is on. Since the construction of technology able to detect the ripples in space and time triggered by collisions from massive objects in the universe, astronomers around the world have been searching for the bursts of light that could accompany such collisions, which are thought to be the sources of rare heavy elements.

Lizards that produce live young are significantly more likely to be driven to extinction through climate change than those that lay eggs, new research suggests.