All Stories
- Tech
Underwater cameras get a new power source — sound!
Needing no batteries, a new digital camera can run almost continuously to offer new, deeper insights into the ocean world.
- Physics
Scientists Say: Fission
Nuclear fission is the process of splitting atoms apart to release huge amounts of energy.
- Animals
Tiny bumps on polar bear paws help them get traction on snow
Super-small structures on the Arctic animals’ paws might offer extra friction that keeps them from slipping on snow, a new study concludes.
- Physics
Explainer: What is friction?
The force of friction always acts to slow things down. It depends on just two factors: the surfaces and how hard they press together.
- Environment
Microplastic pollution aids viruses and prolongs their infectivity
The tiny plastic bits give these germs safe havens. That protection seems to increase as the plastic ages and breaks into ever smaller pieces.
- Chemistry
Was that fingerprint left during a crime? A new test may answer that
In what could be a boon to forensics, Iowa State University chemists have come up with a way to analyze the age of fingerprints.
- Physics
Explainer: Radiation and radioactive decay
Like clockwork, radioactive forms of some elements shed parts of themselves as they attempt to become nonradioactive.
- Physics
Explainer: Radioactive dating helps solve mysteries
Knowing the decay rate of radioactive elements can help date ancient fossils and other artifacts.
- Earth
Fossil-fuel use is confusing some carbon-dating measurements
Carbon-14 dating of recent artifacts will soon give scientists confusing results. That’s another price society pays for its reliance on fossil fuels.
- Computing
Scientists Say: Artificial intelligence
Artificial intelligence is technology smart enough to do tasks that would normally require human brainpower.
- Plants
Why dandelions are so good at widely spreading their seeds
Individual seeds on a dandelion release most easily in response to winds from a specific direction. As the wind shifts, this scatters the seeds widely.
- Climate
Greenland’s inland ice is melting far faster than anyone thought
Inland melting of the Northeast Greenland Ice Stream is accelerating — and may contribute far more to sea level rise than earlier estimates suggested.
