Free satellite data sources

Explore the data: esriurl.com/EcoTapestry

A planetary-scale platform for Earth science data & analysis: https://earthengine.google.com/

Landscape Layers: esriurl.com/landscape

USGS Global Visualization Viewer:  http://glovis.usgs.gov

Satellite Imagery:  http://glcf.umd.edu/data/

How to Apply for an Imagery Grant: http://www.digitalglobefoundation.org/application-process

A planetary-scale platform for Earth science data & analysis: https://earthengine.google.com/

Landscape Layers: esriurl.com/landscape

Introducing the Global Ecological Land Units ArcGISSM Online Services: esriurl.com/eluwhite

Global rasters from USGS via ftp: http://rmgsc.cr.usgs.gov/outgoing/ecosystems/Global/

Introduction to the ecological land units project: esriurl.com/elu