Scientists use ordinary equipment to reveal a hidden picture based on its shadow.
Marcus Woo, Contributor
New research finds the optical effect previously produced using strictly quantum techniques may have broader applications.
Yuen Yiu, Staff Writer
Researchers provide a blueprint for a tiny device that can control the direction of light.
Yuen Yiu, Staff Writer
The 2-ton, 11-foot high tower of glass was first installed in 1859 and still guides ships today.
Catherine Meyers, Staff Writer