The oceans wore a green hue billions of years ago and if cameras existed, Earth would have looked emerald green from up above ...

To understand why cyanobacteria evolved this peculiar system, the researchers genetically engineered modern strains to mimic their ancient ancestors. They added PEB-producing genes to Synechococcus ...

Researchers further confirmed this theory by genetically engineering modern cyanobacteria to use a green-absorbing pigment called phycoerythrobilin. The modified microbes grew better under green light ...