California Institute of Technology

Caltech engineers build smart petri dish

The cameras in our cell phones have dramatically changed the way we share the special moments in our lives, making photographs instantly available to friends and family. Now, the imaging sensor chips that ...

Oct 03, 2011
4.6 / 5 (5) 1 | with audio podcast

One-way transmission system for sound waves

While many hotel rooms, recording studios, and even some homes are built with materials to help absorb or reflect sound, mechanisms to truly control the direction of sound waves are still in their infancy. ...

Jul 26, 2011
4.6 / 5 (8) 5 | with audio podcast

From pre-gut cells to glory

For all animals, development begins with the embryo. It is here that uniform cells divide and diversify, and blueprints are laid for future structures, like skeletal and digestive systems. Although biologists ...

Jun 03, 2011
4.5 / 5 (2) 1 | with audio podcast