For a long time I believed all viruses to be evil due to their pernicious habits: causing common colds, infecting people and spreading influenza and other viral diseases, and wiping out hard drives with grim efficiency.  A group of researchers at MIT decided to give viruses a chance to show a softer side, and they found out that “going viral” can benefit solar cell technology by improving its efficiency by one third.
Scientists have been working with carbon nanotubes (essentially, rolled up sheets of graphene) to encourage solar cells to convert …