We were invited by Prof. Dr. Marie Bergmann to give a guest lecture at Hochschule Bonn-Rhein-Sieg (H-BRS) in the Department of Computer Science. The talk presented a systematic framework for understanding software emissions — clarifying what is emissions-relevant, where emissions originate, and how to measure them. Key topics included emission sources, regulatory contexts, and practical measurement using tools like the Green Metrics Tool. [...]