All Stories by Stephen Ornes
- Brain
Scans show aging brains can leak
The blood-brain barrier gets leakier with age. That breakdown could contribute to memory problems.
- Fossils
Snakes may have slithered amongst Jurassic dinos
Newly analyzed fossils suggest snakes lived at the same time as the golden age of dinosaurs. These early snakes appear to have had flexible skulls and likely also had four small limbs.
- Physics
Sometimes light is not so fast
The speed of light is often called a “constant.” Experiments now show that light doesn't always reach its top speed.
- Computing
Don’t hold ’em – just fold ’em
Scientists have designed a problem-solving process that allows a computer to win at a kind of poker. It gives a computer enough knowledge to win against any opponent — eventually.
- Environment
Immunity: Environment can have big impact
A study on twins suggests that environmental factors can shape a person's immune system more than genes do.
- Health & Medicine
New germ fighter turns up in dirt
Scientists have found a compound in soil that can kill the microbes that cause anthrax, tuberculosis and other diseases.
- Microbes
Ongoing Ebola outbreak traced to hollow tree
Scientists suspect the current Ebola outbreak started with bats that lived in a hollow tree in Guinea. The outbreak's first victim, a two-year-old boy, often played in the tree.
- Animals
Bird DNA leads to strange family tree
Field guides often group birds together by similarities in appearance or behavior. But a new study, based on DNA, confirms earlier suspicions that such groupings are only skin-deep.
- Life
Cell gangs may help cancer spread
A new study on mice suggests that when cancer cells strike out from a primary (first) tumor in groups, they have an especially good chance of creating new tumors elsewhere.
- Fossils
Dino double whammy
Most scientists think an asteroid helped kill off the dinosaurs. But new calculations suggest that asteroid might have gotten some help from a long series of volcanic eruptions in what is now India.
- Animals
Electric eels get on their prey’s nerves
Electric eels wield remote control over their prey’s muscle movements. They do this by zapping their nervous system. Experiments suggest the creatures use these paralyzing bursts of energy to hunt, too.
- Planets
Asteroid impacts may have sparked life on Earth
The energy produced by comets and asteroids that collide with Earth may have been strong enough to start life.
