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The milky green and blue phytoplankton developed where warmer, saltier coastal waters from the subtropics meet colder, fresher waters flowing from the south.
Published Dec 21, 2018
These iconic photos are not new, but their message never gets old.
Published Dec 21, 2018
Chlorophyll is used by algae and other phytoplankton--the grass of the sea--to convert sunlight and carbon dioxide into sugars. These maps show chlorophyll concentrations in the ocean, revealing where phytoplankton are thriving.
Jul 2002 — Nov 2018
Greenness is an important indicator of health for forests, grasslands, and farms. The greenness of a landscape, or vegetation index, depends on the number and type of plants, how leafy they are, and how healthy they are.
Mar 2000 — Nov 2018
The Volga Delta has grown significantly over the past 130 years.
Published Nov 9, 2018