Earth’s Oceans Were Green a Billion Years Ago. They Could Soon Be Green Again.
Although the Earth’s been decidedly blue for 600 million years, rising populations of phytoplankton caused by rising temperatures are once again causing the world’s oceans to turn green.
New Scientist2d
Earth’s oceans may have been green for billions of years
Some cyanobacteria have pigments that specialise in harvesting green light to power photosynthesis, which may be because they ...