Waves and Their Applications in Technologies for Information Transfer
- Earth
Tsunami’s trek traced in the sky
Scientists photograph atmospheric ripples that followed the March tsunami across the Pacific.
- Tech
Lasers of a feather
A nifty light trick in bird feathers inspires researchers to create a new kind of laser.
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Kids’ ingenuity honored at Intel ISEF
Young scientists receive awards in international competition.
- Tech
Cell phones on the brain
When an active cell phone is pressed against the ear, the brain gets busier.
- Environment
Underwater racket
The oceans are getting louder, and scientists want to know what that means for marine residents.
- Physics
Explainer: What is a laser?
Lasers are the brightest source of light on Earth and produce the purest form of color possible.
- Physics
Explainer: How a synchrotron works
Giant magnets direct superfast light into beams up to 30 million times as bright as those produced by a laser pointer.
- Animals
A Sense of Danger
Can animals warn us if an earthquake or some other natural disaster is about to strike?
- Tech
Electronic paper turns a page
Changeable ink and battery-powered paper may make textbooks lighter and bring video newspapers into daily use.
- Tech
Cell phones and possible health hazards
Radiation from some cell phones appears to kill brain cells in rats.
