Day: April 21, 2014

Landsat satellites have monitored Earth’s environment for more than four decades, providing detailed imagery of some of our planet’s most precious ecosystems such as forests, coastlines, glaciers, volcanoes and oceans. Scientists, researchers, foresters, emergency responders and educators use the data sets to understand natural and human-caused surface changes, identify the ecological impact of natural disasters, examine the effectiveness of environmental policies, and help preserve our planet for future generations.