Scientists have been struggling for years to produce synthetic chlorophyll for improved panels for solar power, with only recent success.<ref>http://www.sciencedaily.com/releases/2007/04/070405171830.htm</ref> | Scientists have been struggling for years to produce synthetic chlorophyll for improved panels for solar power, with only recent success.<ref>http://www.sciencedaily.com/releases/2007/04/070405171830.htm</ref> |