Causesclimate.nasa.gov How satellites revolutionized the way we see—and protect—the natural world The first satellite in NASA’s Landsat program launched 50 years ago. It’s since shown images of Amazon deforestation, tracked urban heat islands, and helped reveal other ways humans have changed the face of the planet.
Causes www.nature.com US government considers charging for popular Earth-observing data Images from Landsat satellites and agricultural-survey programme are freely available to scientists — but for how long?
