Life

EO On This Day
Article

EO On This Day

In honor of our site anniversary, we offer a selection of some of the most beautiful, newsworthy, interesting, and scientifically important images from 23 years online — one image for each day of the calendar year.

Published Apr 26, 2022

Atmosphere Heat Land Life Water Snow and Ice

Chlorophyll
Global Maps

Chlorophyll

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 2022

Life Water

Vegetation
Global Maps

Vegetation

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 — Mar 2022

Land Life

No Breathing Easy for City Dwellers: Particulates
Image

No Breathing Easy for City Dwellers: Particulates

A new satellite-derived dataset links concentrations of fine particulate matter in air pollution with health outcomes in cities around the world.

Published Mar 15, 2022

Image of the Day Atmosphere Life Human Presence Remote Sensing

No Breathing Easy for City Dwellers: Nitrogen Dioxide
Image

No Breathing Easy for City Dwellers: Nitrogen Dioxide

A new satellite-derived global dataset links concentrations of nitrogen dioxide with cases of pediatric asthma in urban areas around the world.

Published Mar 14, 2022

Image of the Day Atmosphere Life Human Presence Remote Sensing