DNA as fiber optics

Courtesy of Warren Ellis, we are shown once again that reality is not only cooler than you imagine, it's cooler than you can ... etc. etc.:

Thanks to a new technique, DNA strands can be easily converted into tiny fibre optic cables that guide light along their length. Optical fibres made this way could be important in optical computers, which use light rather than electricity to perform calculations, or in artificial photosynthesis systems that may replace today's solar panels.

In the comments -- your favorite recent weird science story.