Thanks to innovations in satellite monitoring, we’ve never had a better understanding of when and where forests are changing around the world. Global Forest Watch (GFW) makes the best available data about forests available online for free, creating unprecedented transparency about what is happening in forests worldwide.

Watch “Introduction to Satellite Monitoring”, the first installment in our “Frontiers in Forest Monitoring” series, to learn the basics of remote sensing to monitor forests. From conceptualizing the size of a 30meter pixel to the difference between optical and radar imagery, you’ll gain a foundation in satellite monitoring that will enable you to better understand the data on GFW.