For today's episode, we're joined by Catalina Munteanu, Researcher at the University of Frieberg in Germany, who has a background in geography and forest sciences. Also joining us is Volker Radeloff, Professor at the University of Wisconsin-Madison, in the SILVIS Lab, where he works on satellite imagery to look at land use. They were here to discuss the potential value of images from Cold War-era spy satellites for current ecological research and practice.  Read their article in BioScience. Captions are available on YouTube.