Frequently asked questions

Where does the data come from?

The data for each app is processed and acquired using Google Earth Engine, a cloud-based satellite imagery analysis software. To learn more about Earth Engine and access the imagery, visit

Why satellite imagery?

Space agencies around the world have operated Earth observation satellites for decades, providing a long-term historical archive of Earth and its changes over time to the present day. Using satellite imagery, we can get a real-time pulse on the state of populations and ecosystems across the world.

What's the goal of Cloud to Classroom?

Cloud to Classroom seeks to use satellite imagery to visually explain local-to-global scale environmental change. Through communicating long-term trends over time, as well as notable local hotspots, we aim to demonstrate that climate change is already a highly present threat in communities and ecosystems around the world.

Who runs Cloud to Classroom?

Cloud to Classroom is a collaborative project funded by NASA, National Geographic, and Google Earth Outreach.

Where can I get more information about the environmental trends included on Cloud to Classroom?

The following sites include additional scientific information on climate change and its indicators:

Can I access the apps in different languages?

We're currently working to release apps in several target languages, including Spanish, Portuguese, and French. If you're interested in accessing an app in an additional languge, please reach out to

How can I spread the word about Cloud to Classroom?

When sharing Cloud to Classroom on social media, please use #CloudtoClassroom.