A team of researchers at Vanderbilt University has developed a method of manipulating the circadian clock of cyanobacteria. This biological manipulation is used to increase gene expression in target genes that produce biofuel and high-value bioproducts, such as pharmaceuticals and cosmetics from precursor-expressing genes. Altering the circadian rhythm in the bacteria provides an improved approach to bioproduct development on a large scale using sunlight as a zero--cost energy solution.