Paul Arnold

Our nearest neighbor, the moon, is still something of a mystery to us. For decades, scientists have wondered why it appears so lopsided, with dark volcanic plains on the near side (the side we see) and rugged, cratered mountains ...

Spaceflight takes a physical toll on astronauts, causing muscles to atrophy, bones to thin and bodily fluids to shift. According to a new study published in the journal PNAS, we can now add another major change to that list. ...

In a blow to anyone dreaming that complex life may exist elsewhere in the universe, a new study suggests we're unlikely to find it around many of the most common stars in the galaxy.

Global efforts to reduce pollution will not be enough to mitigate the worst effects of climate change, scientists say. We will also need to extract over 10 gigatons of carbon dioxide from the atmosphere every year for the ...

A team of scientists from China has successfully created a miniature womb on a chip that mimics the complex environment of the human uterus. The research offers a new way to study the exact moment an embryo attaches to a ...

Researchers in China have unveiled a new AI framework that could accelerate the discovery of new medicines. DrugCLIP can scan millions of potential drug compounds against thousands of protein targets in just a few hours—ten ...

Flirting is often seen as playful behavior that signals interest to a potential partner. But according to new research, there is much more to the teasing, light-hearted conversation and coquettish glances than meets the eye. ...

Ceratopsians were horned, beaked dinosaurs that once stomped their way all over North America and Asia during the Late Cretaceous period, about 80 million years ago. Their abundance in the fossil records of these continents, ...

Albumin is the most common protein in the blood, a vital molecule produced by the liver that helps maintain fluid balance and transports proteins and hormones. It also plays a key role in fighting off a lethal disease called ...

For more than 70 years, what were thought to be mammoth fossils were tucked away in the archives of the University of Alaska Museum of the North. During the museum's Adopt-a-Mammoth program, which allows the public to sponsor ...

In the aftermath of the giant asteroid that crashed into the Yucatan Peninsula about 66 million years ago, approximately 75% of all species on Earth were wiped out, including the dinosaurs. Among those thought to have perished ...

Artificial intelligence programs are not only helping us tackle complex challenges like diagnosing diseases and predicting weather patterns, but also assisting with more mundane matters such as correcting grammar and planning ...

Two new studies into lizard colors reveal how one species maintains its colorful diversity while others are losing their ancient colors. And the changes are being driven by the biological equivalent of rock-paper-scissors.

Conspiracy theories are one of the banes of the modern world, exacerbated by the internet and social media. What was once relegated to the fringe has now been pushed into the mainstream, actively shaping public discourse ...

Blood cancer is an umbrella term for a variety of diseases that affect the blood, bone marrow and lymphatic system. Like most cancers, the cause is usually mutations in the DNA, which are genetic errors that accumulate as ...