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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 — Apr 2019
In several decades of observing the ocean with satellites, our vision has changed as much as the sea.
Published Apr 29, 2019
In honor of our 20th anniversary, we offer a selection of some of the most beautiful, newsworthy, interesting, and scientifically important images from the past 20 years — one for each day of the calendar year.
Published Apr 29, 2019
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 — Mar 2019
In March 2019, an explosion of wildflowers blanketed greening deserts in southern California.
Published Mar 21, 2019