The Earth shows different faces and tells different stories when it is observed from high above through different instruments. Some satelliteborne instruments, like radar, penetrate the sands of Earth to reveal lost civilizations buried centuries ago.
Some instruments reveal otherwise invisible changes in the atmosphere, like ozone depletion.
Yet others show changes in ocean temperatures and ocean color that can be used to forecast effects on marine biology and weather. Earth changes take place over many scales of time and space. Interpret the data and images to understand how and why Earth is changing. Getting Started Consult the Watching Earth Change Educator Resource Guide to find detailed guidelines for using this competition as an educational activity, and for excellent sources of Earth science research, data, maps, images, and spacecraft information. Watching Earth Change Educator Resource Guide also contains a detailed description of rubrics that will be used to judge Watching Earth Change proposals.