From digital voice assistants to facial recognition in smartphones and smart home devices, artificial intelligence has become an indispensable part of our everyday lives. AI systems can also make an important contribution to the fight against climate change - despite their high energy consumption. Prof. Ralf Herbrich, head of HPI's "AI and Sustainability" department, and Robert Williamson, professor of "Fundamentals of Machine Learning Systems" at Eberhard Karls University Tübingen, discuss exactly how this is possible.