At a mere 2 square micrometers in size, this is the world's smallest QR code and it's 'smaller than most bacteria'

The QR code is so small, in fact, that it can "only be recognised with an electron microscope". As a result, the research ...

Figure skating: How to watch Amber Glenn's, Alysa Liu's short programs at the Winter Olympics

Team USA's "Blade Angels" trio, featuring Alysa Liu, Amber Glenn and Isabeau Levito, will hit the ice Tuesday. Here's when and how to watch. (AP Photo) ...