A new study from researchers at Duke and Georgia Tech found that ocean waters are getting greener at the poles and bluer ...

They argued that this was because large natural variations in chlorophyll that occur year to year would overtake any human-made influence on chlorophyll concentrations. [Related: e.] ...

Chlorophyll is the pigment that gives plants (and some algae and bacteria) their green color. It is vital for photosynthesis, the process that uses sunlight to produce oxygen and chemical energy ...

Chlorophyll is responsible for giving leaves their green color. As the days become shorter with a new season, less sunlight means less production of chlorophyll. This allows other chemical ...