science

A new study describes, in detail, the stiffness of beetle penises, which might serve as inspiration for people who design medical catheters.

The industry has long struggled with an engineering problem: How do you keep a very thin tube flexible enough to snake into hard-to-reach places but rigid enough to withstand insertion? Plus, there is the problem of buckling — when a thin tube crimps so fluids can't flow through it anymore.

An international team of scientists have announced the discovery of a previously unknown species of prehistoric penguin.

The bird waddled around off the east coast of New Zealand between 55 and 60 million years ago. And it was a giant as far as penguins go. The researchers estimate that it probably weighed about 220 pounds and was around 5 feet 10 inches tall.

Ticks sucked the blood of feathered dinosaurs some 99 million years ago, a new study suggests.

Modern ticks are infamous for biting humans and other mammals. But ticks are very ancient, and scientists who study their evolution have long wondered what (or who) the little vampires ate before there were lots of mammals to feed on. Feathered dinosaurs apparently were among the possible creatures on the menu.

Narwhals — the unicorns of the sea — show a weird fear response after being entangled in nets. Scientists say this unusual reaction to human-induced stress might restrict blood flow to the brain and leave the whales addled.

Scientists have just discovered a supermassive black hole that existed surprisingly early in the history of the universe, and the puzzling find is shedding new light on when the first stars blinked on.

Astronomers spotted the black hole, the most distant ever found, sitting inside a bright object so far away that the light had been traveling for 13 billion years before reaching Earth.

Beautiful. Pure. Natural. Medicine at its pinnacle.

Those were the words of Dr. Giuliano Testa this week — the principal investigator of a clinical trial with ten women underway at Baylor University Medical Center in Dallas.

He was talking about the birth of a baby boy to a mother who underwent a uterus transplant last year. It's a first in the U.S., but in Sweden, eight babies have been born to mothers with uterus transplants.

Nobody likes the feeling of being left out, and when it happens, we tend to describe these experiences with the same words we use to talk about the physical pain of, say, a toothache.

"People say, 'Oh, that hurts,' " says Nathan DeWall, a professor of psychology at the University of Kentucky.

DeWall and his colleagues were curious about the crossover between physical pain and emotional pain, so they began a series of experiments several years back.

A brain system involved in everything from addiction to autism appears to have evolved differently in people than in great apes, a team reports Thursday in the journal Science.

The system controls the production of dopamine, a chemical messenger that plays a major role in pleasure and rewards.

Astronomers in California are building the largest digital camera in the world. It will go on a giant telescope taking shape in Chile called the Large Synoptic Survey Telescope.

LSST is different from most large telescopes. Instead of staring at a tiny patch of the sky and taking essentially one snapshot in time, LSST will take a panorama of every part of the sky...and it will do so over and over and over. The idea is to see what's moving or changing in the heavens.

People who are thinking about killing themselves appear to have distinctive brain activity that can now be measured by a computer.

In these people, words like "death" and "trouble" produce a distinctive "neural signature" not found in others, scientists report in the journal Nature Human Behaviour. More than 44,000 people commit suicide in the U.S. each year.

Astronomers have spotted some kind of outer space rock that's the first visitor from outside of our solar system that they've ever observed.

The discovery has set off a mad scramble to point telescopes at this fast-moving object to try to learn as much as possible before it zips out of sight.

Kids stick things in their nose, ears, and mouth all the time; it may be another way for them to explore and learn.

But getting those objects out be challenging, and can take some creativity. Like when an 11-year-old boy put button magnets up both nostrils, where they locked tightly onto his septum.

Scientists in Seattle have created three-dimensional computer reconstructions of living human brain cells by studying tissue that is usually discarded during surgery.

Here's something that may sound like a contradiction in terms: low-fat pigs.

But that's exactly what Chinese scientists have created using new genetic engineering techniques.

In a paper published Monday in the Proceedings of the National Academy of Sciences, the scientists report that they have created 12 healthy pigs with about 24 percent less body fat than normal pigs.

Updated at 9:45 a.m. ET Tuesday

Interest in "Properties of Expanding Universes" is at an all-time high: Stephen Hawking's doctoral thesis of that name crashed Cambridge University's open-access repository on the first day the document was posted online.

Pages