This seems significant, in terms of solar cell technology and the future of energy consumption:
Researchers at Purdue University in Indiana have described a complex and elegant way to combine DNA and carbon nanotubes in a prototype for solar cells that can renew their energy-generating capacity over time. The cells take advantage of chromophores, the light-sensitive parts of molecules active in the chlorophyll plants use to harvest energy from sunlight. Chromophores deliver energy from light faster than electronic systems; the trouble is, they break down in the process.
Researcher Jong Hyun Choi and colleagues describe the process as biomimetic — because it’s very, very similar to how the leaves of plants work but not quite.