By Dan Oancea - Twitter

"The Landsat image services from Esri leverage the 40-year, multibillion-dollar US government investment in the collection and archiving of continuous worldwide Landsat imagery for earth observation. At 30-meter spatial resolution, Landsat imagery is excellent for mapping regional trends in climate change, agriculture, wildlife habitat, forestry, regional planning, coastal zones, and national security. Each Landsat satellite image also "sees" more than humans by collecting data in nonvisible wavelengths such as the infrared and optical (natural color) portions of the electromagnetic spectrum." For the article link - click here

To actually see it for your self go to the Fast and Easy Access to Landsat page where you could launch the Viewer and gain Access to multi-temporal, multi-spectral worldwide Landsat GLS data.