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.

but reflect back green wavelengths more than blue. Certain types of phytoplankton even produce toxins that color the water red, a so-called "red tide." Other parts of the ocean may appear to have ...

Billions of years ago, our planet did not have the deep blue oceans we admire today. Instead, they were actually […] ...

Blue-green algae has never been a food on my radar. But it turns out dried cyanobacteria both looks lovely and is packed with protein and amino acids and other things that are good for your body. So, ...

Their simulation showed the iron was triple-charged, which meant it would have given the ocean water a green hue because iron hydroxide absorbs blue light and water absorbs red light—leaving ...

The Florida Department of Health in Orange County has issued a health alert for blue-green algae toxins found in Lake ...