The London Centre for Nanotechnology is dreaming up ways to make your gadgets faster. We visit their cool lab in this video.
Turns out those terahertz scanners in the airports are mostly safe, but they do a little unzipping of your DNA. Derek says it's nothing to worry about. You won't grow a third arm in the airport. Even if it would be handy for carrying baggage.
University researchers in the U.K. and the Ukraine develop the first laser to emit sound waves in the terahertz frequency range.